United States Senate elections, 2016 - wikipedia United States Senate elections, 2016 United States Senate elections, 2016 ← 2014 November 8, 2016 2018 → Class 3 ( 34 of the 100 ) seats in the United States Senate 51 seats needed for a majority Majority party Minority party Leader Mitch McConnell Harry Reid ( retiring ) Party Republican Democratic Leader 's seat Kentucky Nevada Seats before 54 44 Seats after 52 46 Seat change Popular vote 40,402,790 51,496,682 Percentage 42.4 % 53.8 % Swing 9.3 % 10.0 % Seats up 24 10 Races won 22 12 Third party Party Independent Seats before Seats after Seat change Popular vote 562,935 Percentage 0.5 % Seats up 0 Races won 0 Democratic gains Democratic holds Republican holds ^ Jump up to : Both Independents caucus with the Democrats. Majority Leader before election Mitch McConnell Republican Elected Majority Leader Mitch McConnell Republican Elections to the United States Senate were held on November 8, 2016. The presidential election, House elections, 14 gubernatorial elections, and many state and local elections were held on the same date. In the 2016 Senate election, 34 of the 100 seats -- all class 3 Senate seats -- were contested in regular elections ; the winners will serve six - year terms until January 3, 2023. Class 3 was last up for election in 2010, when Republicans won a net gain of six seats. In 2016, Democrats defended 10 seats, while Republicans defended 24 seats. Republicans, having won a majority of seats in the Senate in 2014, held the Senate majority with 54 seats before this election. Democrats won a net gain of two seats. Republicans retained control of the Senate for the 115th United States Congress. Only two incumbents lost their seats, Kelly Ayotte of New Hampshire and Mark Kirk of Illinois, to Democrats Maggie Hassan and Tammy Duckworth, respectively. Despite Republicans retaining control of the Senate, 2016 marks the first time since 1986 that Democrats made a net gain of seats in class 3. This election marks the first time since 2000 in which the party in opposition to the elected or reelected presidential candidate made net gains in the Senate. This is the first and only election since the passage of the Seventeenth Amendment in 1913 where the winning party in every Senate election mirrored the winning party for their state in the presidential election. With the retirement of Harry Reid, Chuck Schumer became the Democratic leader after the elections, while Mitch McConnell retained his position as Senate Majority Leader. Contents 1 Results summary 2 Change in composition 2.1 Before the elections 2.2 After the elections 3 Latest predictions of competitive seats 4 Close races 5 Primary dates 6 Race summary 7 Complete list of races 7.1 Alabama 7.2 Alaska 7.3 Arizona 7.4 Arkansas 7.5 California 7.6 Colorado 7.7 Connecticut 7.8 Florida 7.9 Georgia 7.10 Hawaii 7.11 Idaho 7.12 Illinois 7.13 Indiana 7.14 Iowa 7.15 Kansas 7.16 Kentucky 7.17 Louisiana 7.18 Maryland 7.19 Missouri 7.20 Nevada 7.21 New Hampshire 7.22 New York 7.23 North Carolina 7.24 North Dakota 7.25 Ohio 7.26 Oklahoma 7.27 Oregon 7.28 Pennsylvania 7.29 South Carolina 7.30 South Dakota 7.31 Utah 7.32 Vermont 7.33 Washington 7.34 Wisconsin 8 See also 9 References Results summary All 34 Class 3 Senators were up for election in 2016 ; Class 3 consisted of 10 Democrats and 24 Republicans. Of the Senators not up for election, 34 Senators were Democrats, 30 Senators were Republicans and two Senators are independents who caucus with the Senate Democrats. Parties Total Democratic Republican Independent Libertarian Other Before these elections 44 54 -- -- 100 Not up 34 30 -- -- 66 Class 1 ( 2012 → 2018 ) 23 8 -- -- 33 Class 2 ( 2014 → 2020 ) 11 22 0 -- -- 33 Up 10 24 0 -- -- 34 Class 3 ( 2010 → 2016 ) 10 24 0 -- -- 34 Special : All classes 0 0 0 -- -- 0 General election Incumbent retired -- -- -- 5 Held by same party -- -- -- 5 Replaced by other party 0 0 -- -- -- 0 Result -- -- -- 5 Incumbent ran 7 22 -- -- -- 29 Won re-election 7 20 -- -- -- 27 Lost re-election 2 Republicans replaced by 2 Democrats -- -- -- Lost renomination but held by same party 0 0 -- -- -- 0 Result 9 20 -- -- -- 29 Total elected 12 22 -- -- -- 34 Net gain / loss Nationwide vote 51,269,434 40,761,406 562,935 1,950,641 1,918,756 96,103,172 Share 53.54 % 42.41 % 0.58 % 1.65 % 2.00 % 100 % Result 46 52 -- -- 100 Change in composition Before the elections Ran Ran Ran Ran Ran Ran Ran Retired Retired Retired Retired Retired Ran Ran Majority → Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran Ran After the elections Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Hold Hold Hold Gain Gain Hold Hold Majority → Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Re-elected Key : D Democratic Republican Independent, caucusing with Democrats Latest predictions of competitive seats Several sites and individuals publish predictions of competitive seats. These predictions look at factors such as the strength of the incumbent ( if the incumbent is running for re-election ), the strength of the candidates, and the partisan leanings of the state ( reflected in part by the state 's Cook Partisan Voting Index rating ). The predictions assign ratings to each seat, with the rating indicating the predicted advantage that a party has in winning that seat. Most election predictors use `` tossup '' to indicate that neither party has an advantage, `` lean '' to indicate that one party has a slight advantage, `` likely '' or `` favored '' to indicate that one party has a significant but not insurmountable advantage, and `` safe '' or `` solid '' to indicate that one party has a near - certain chance of victory. Some predictions also include a `` tilt '' rating that indicates that one party has an advantage that is not quite as strong as the `` lean '' rating would indicate. Where a site gives a percentage probability as its primary indicator of expected outcome, the chart below classifies a race as follows : Tossup : 50 - 55 % Tilt : 56 - 60 % Lean : 61 - 75 % Likely : 76 - 93 % Safe : 94 - 100 % The New York Times ' Upshot gave the Democrats a 60 % chance of winning the Senate on August 24, 2016 ; on September 23, their model gave Republicans a 58 % chance to maintain control. All seats classified with at least one rating of anything other than `` safe '' or `` solid '' are listed below. State PVI Incumbent result Cook Nov. 2 2016 Sabato Nov. 7 2016 Roth. Nov. 3 2016 Kos Nov. 7 2016 RCP Nov. 2 2016 538 Nov. 7 2016 NYT Nov. 7 2016 TPM Nov. 5 2016 Winner Alaska 112 ! R + 12 Lisa Murkowski ( R ) 39.5 % 103 ! Likely R 104 ! Safe R 104 ! Safe R 104 ! Safe R 104 ! Safe R 104 ! 98 % R 104 ! 99 + % R 104 ! Safe R Murkowski Arizona 107 ! R + 7 John McCain ( R ) 59.2 % 102 ! Lean R 103 ! Likely R 103 ! Likely R 103 ! Likely R 102 ! Lean R 104 ! 97 % R 104 ! 99 % R 104 ! Safe R McCain Colorado 099 ! D + 1 Michael Bennet ( D ) 3 ! 47.7 % 097 ! Likely D 096 ! Safe D 096 ! Safe D 096 ! Safe D 098 ! Lean D 096 ! 95 % D 096 ! 96 % D 097 ! Likely D Bennet Florida 102 ! R + 2 Marco Rubio ( R ) 48.9 % 102 ! Lean R 102 ! Lean R 102 ! Lean R 103 ! Likely R 100 ! Tossup 103 ! 87 % R 103 ! 85 % R 102 ! Lean R Rubio Georgia 106 ! R + 6 Johnny Isakson ( R ) 58.1 % 103 ! Likely R 104 ! Safe R 104 ! Safe R 104 ! Safe R 103 ! Likely R 104 ! 97 % R 104 ! 99 % R 104 ! Safe R Isakson Illinois 092 ! D + 8 Mark Kirk ( R ) 48.2 % 098 ! Lean D 097 ! Likely D 098 ! Lean D 096 ! Safe D 097 ! Likely D 096 ! 97 % D 096 ! 98 % D 096 ! Safe D Duckworth Indiana 105 ! R + 5 Dan Coats ( R ) ( Retiring ) 56.4 % 100 ! Tossup 102 ! Lean R 100 ! Tossup 100 ! Tossup 100 ! Tossup 102 ! 61 % R 100 ! 53 % D 102 ! Lean R Young Iowa 099 ! D + 1 Chuck Grassley ( R ) 64.5 % 103 ! Likely R 104 ! Safe R 104 ! Safe R 104 ! Safe R 104 ! Safe R 104 ! 99 + % R 104 ! 99 + % R 104 ! Safe R Grassley Kentucky 113 ! R + 13 Rand Paul ( R ) 55.7 % 104 ! Safe R 104 ! Safe R 104 ! Safe R 104 ! Safe R 103 ! Likely R 103 ! 93 % R 104 ! 97 % R 104 ! Safe R Paul Louisiana 112 ! R + 12 David Vitter ( R ) ( Retiring ) 56.6 % 104 ! Safe R 103 ! Likely R 104 ! Safe R 104 ! Safe R 103 ! Likely R 103 ! 86 % R 104 ! 96 % R 103 ! Likely R Kennedy Missouri 105 ! R + 5 Roy Blunt ( R ) 54.3 % 100 ! Tossup 102 ! Lean R 100 ! Tossup 100 ! Tossup 100 ! Tossup 102 ! 55 % R 102 ! 65 % R 100 ! Tossup Blunt Nevada 098 ! D + 2 Harry Reid ( D ) ( Retiring ) 2 ! 50.2 % 100 ! Tossup 098 ! Lean D 100 ! Tossup 098 ! Lean D 100 ! Tossup 099 ! 57 % D 099 ! 60 % D 100 ! Tossup Cortez Masto New Hampshire 099 ! D + 1 Kelly Ayotte ( R ) 60.2 % 100 ! Tossup 098 ! Lean D 100 ! Tossup 100 ! Tossup 100 ! Tossup 100 ! 53 % D 100 ! 55 % R 100 ! Tossup Hassan North Carolina 103 ! R + 3 Richard Burr ( R ) 55.0 % 100 ! Tossup 102 ! Lean R 100 ! Tossup 100 ! Tossup 100 ! Tossup 102 ! 69 % R 102 ! 67 % R 100 ! Tossup Burr Ohio 101 ! R + 1 Rob Portman ( R ) 57.3 % 102 ! Lean R 104 ! Safe R 103 ! Likely R 104 ! Safe R 103 ! Likely R 104 ! 98 % R 104 ! 97 % R 104 ! Safe R Portman Pennsylvania 099 ! D + 1 Pat Toomey ( R ) 51.0 % 100 ! Tossup 098 ! Lean D 100 ! Tossup 100 ! Tossup 100 ! Tossup 098 ! 68 % D 098 ! 66 % D 098 ! Lean D Toomey Wisconsin 098 ! D + 2 Ron Johnson ( R ) 51.9 % 100 ! Tossup 098 ! Lean D 097 ! Tilt D 098 ! Lean D 100 ! Tossup 097 ! 87 % D 098 ! 72 % D 098 ! Lean D Johnson Cook, Sabato, Rothenberg, Daily Kos Elections, FiveThirtyEight, Real Clear Politics, Talking Points Memo, and the New York Times consider the states listed below to be safe seats for the party currently holding the seat. Safe Republican Safe Democratic Alabama California Arkansas Connecticut Idaho Hawaii Kansas Maryland North Dakota New York Oklahoma Oregon South Carolina Vermont South Dakota Washington Utah indicates an open seat Close races Red denotes Senate races won by Republicans ; Blue denotes those won by Democrats. States where the margin of victory was under 1 % : New Hampshire, 0.14 % States where the margin of victory was between 1 % and 5 % : Pennsylvania, 1.43 % Nevada, 2.43 % Missouri, 2.79 % Wisconsin, 3.36 % States where the margin of victory was between 5 % and 10 % : Colorado, 5.66 % North Carolina, 5.70 % Florida, 7.67 % Indiana, 9.70 % Primary dates This table shows the primary dates for regularly - scheduled elections. It also shows the type of primary. `` Open '' primary : any registered voter can vote in any party 's primary `` Closed '' primary, only voters registered with a specific party can vote in that party 's primary. `` Top - two '' primary, all candidates run against each other regardless of party affiliation, and the top two candidates advance to the second round of voting. ( In Louisiana, a candidate can win the election by winning a majority of the vote in the first round. ) All of the various other primary types are classified as `` hybrid. '' Alaska in 2008 provides one example of a hybrid primary : The Democratic Party allowed unaffiliated voters to vote in its primary, while the Republican Party only allowed party members to vote in its primary. State Date Type Alabama Mar. 1 Open Arkansas Mar. 1 Open Illinois Mar 15 Hybrid North Carolina Mar 15 Hybrid Ohio Mar 15 Hybrid Maryland April 26 Hybrid Pennsylvania April 26 Closed Indiana May 3 Open Idaho May 17 Hybrid Kentucky May 17 Closed Oregon May 17 Hybrid Georgia May 24 Open California June 7 Top - two Iowa June 7 Hybrid South Dakota June 7 Hybrid Nevada June 14 Closed North Dakota June 14 Open South Carolina June 14 Hybrid Colorado June 28 Hybrid New York June 28 Closed Oklahoma June 28 Hybrid Utah June 28 Hybrid Kansas Aug 2 Closed Missouri Aug 2 Open Washington Aug 2 Top - two Connecticut Aug 9 Hybrid Vermont Aug 9 Open Wisconsin Aug 9 Open Hawaii Aug 13 Open Alaska Aug 16 Hybrid Arizona Aug 30 Hybrid Florida Aug 30 Closed New Hampshire Sep 13 Hybrid Louisiana Nov 8 Top - two Indicates a state that requires primary run - off elections under certain conditions. Race summary State ( linked to summaries below ) Incumbent Status Candidates Senator Party Electoral history Alabama Shelby, Richard Richard Shelby Republican 1986 1992 1998 Incumbent re-elected. √ Richard Shelby ( Republican ) 64.2 % Ron Crumpton ( Democratic ) 35.8 % Alaska Murkowski, Lisa Lisa Murkowski Republican 2002 ! 2002 ( Appointed ) Incumbent re-elected. √ Lisa Murkowski ( Republican ) 44 % Joe Miller ( Libertarian ) 29 % Margaret Stock ( Independent ) 13 % Ray Metcalfe ( Democratic ) 12 % Arizona McCain, John John McCain Republican 1986 1992 1998 Incumbent re-elected. √ John McCain ( Republican ) 53 % Ann Kirkpatrick ( Democratic ) 41 % Pat Quinn ( independent / Write - in ) Gary Swing ( Green / Write - in ) 5 % Arkansas Boozman, John John Boozman Republican Incumbent re-elected. √ John Boozman ( Republican ) 59.7 % Conner Eldridge ( Democratic ) 36.3 % Frank Gilbert ( Libertarian ) 4.0 % California Boxer, Barbara Barbara Boxer Democratic 1992 1998 Incumbent retired. Democratic hold. √ Kamala Harris ( Democratic ) 61.8 % Loretta Sanchez ( Democratic ) 38.2 % Colorado Bennet, Michael Michael Bennet Democratic 2009 ! 2009 ( Appointed ) Incumbent re-elected. √ Michael Bennet ( Democratic ) 50.0 % Darryl Glenn ( Republican ) 44.3 % Lily Tang Williams ( Libertarian ) 3.6 Arn Menconi ( Green ) 1.3 Connecticut Blumenthal, Richard Richard Blumenthal Democratic Incumbent re-elected. √ Richard Blumenthal ( Democratic ) 63.2 % Dan Carter ( Republican ) 34.6 % Richard Lion ( Libertarian ) 1.1 Jeff Russell ( Green ) 1.0 Florida Rubio, Marco Marco Rubio Republican Incumbent re-elected. √ Marco Rubio ( Republican ) 52.0 % Patrick Murphy ( Democratic ) 44.3 % Paul Stanton ( Libertarian ) 2.1 Georgia Isakson, Johnny Johnny Isakson Republican Incumbent re-elected. √ Johnny Isakson ( Republican ) 54.8 % Jim Barksdale ( Democratic ) 41 % Allen Buckley ( Libertarian ) 4.16 % Hawaii Schatz, Brian Brian Schatz Democratic 2012 ! 2012 ( Appointed ) 2014 ( Special ) Incumbent re-elected. √ Brian Schatz ( Democratic ) 73.6 % John Carroll ( Republican ) 22.2 % Idaho Crapo, Mike Mike Crapo Republican 1998 Incumbent re-elected. √ Mike Crapo ( Republican ) 66.1 % Jerry Sturgill ( Democratic ) 27.8 % Ray Writz ( Constitution ) 6.0 % Illinois Kirk, Mark Mark Kirk Republican Incumbent lost re-election. Democratic gain. √ Tammy Duckworth ( Democratic ) 54.9 % Mark Kirk ( Republican ) 39.8 % Kent McMillen ( Libertarian ) 3.2 % Scott Summers ( Green ) 2.1 Indiana Coats, Dan Dan Coats Republican 1989 ( Appointed ) 1990 ( Special ) 1992 1998 ( retired ) Incumbent retired. Republican hold. √ Todd Young ( Republican ) 52.1 % Evan Bayh ( Democratic ) 42.4 % Lucy Brenton ( Libertarian ) 5.5 % Iowa Grassley, Chuck Chuck Grassley Republican 1980 1986 1992 1998 Incumbent re-elected. √ Chuck Grassley ( Republican ) 60.1 % Patty Judge ( Democratic ) 35.7 % John Heiderscheit ( Libertarian ) 2.7 Kansas Moran, Jerry Jerry Moran Republican Incumbent re-elected. √ Jerry Moran ( Republican ) 62.1 % Patrick Wiesner ( Democratic ) 32.2 % Robert Garrard ( Libertarian ) 5.5 % Kentucky Paul, Rand Rand Paul Republican Incumbent re-elected. √ Rand Paul ( Republican ) 57.27 % Jim Gray ( Democratic ) 42.73 % Louisiana Vitter, David David Vitter Republican Incumbent retired. New senator elected. Republican hold. √ John N. Kennedy ( Republican ) 60.65 % Foster Campbell ( Democratic ) 39.35 % Maryland Mikulski, Barbara Barbara Mikulski Democratic 1986 1992 1998 Incumbent retired. New senator elected. Democratic hold. √ Chris Van Hollen ( Democratic ) 60.9 % Kathy Szeliga ( Republican ) 35.7 % Margaret Flowers ( Green ) Missouri Blunt, Roy Roy Blunt Republican Incumbent re-elected. √ Roy Blunt ( Republican ) 49.3 % Jason Kander ( Democratic ) 46.2 % Jonathan Dine ( Libertarian ) Nevada Reid, Harry Harry Reid Democratic 1986 1992 1998 Incumbent retired. New senator elected. Democratic hold. √ Catherine Cortez Masto ( Democratic ) 47.1 % Joe Heck ( Republican ) 44.7 % Tom Jones ( Independent American ) Tony Gumina ( unaffiliated ) Tom Sawyer ( unaffiliated ) Jarrod Michael Williams ( unaffiliated ) ( None of these candidates ) New Hampshire Ayotte, Kelly Kelly Ayotte Republican Incumbent lost re-election. New senator elected. Democratic gain. √ Maggie Hassan ( Democratic ) 47.97 % Kelly Ayotte ( Republican ) 47.87 % Brian Chabot ( Libertarian ) New York Schumer, Chuck Chuck Schumer Democratic 1998 Incumbent re-elected. √ Chuck Schumer ( Democratic ) 70.4 % Wendy Long ( Republican ) 27.4 % Alex Merced ( Libertarian ) Robin Wilson ( Green ) North Carolina Burr, Richard Richard Burr Republican Incumbent re-elected. √ Richard Burr ( Republican ) 51.1 % Deborah Ross ( Democratic ) 45.3 % Sean Haugh ( Libertarian ) North Dakota Hoeven, John John Hoeven Republican Incumbent re-elected. √ John Hoeven ( Republican ) 78.4 % Eliot Glassheim ( Democratic ) 17.0 % Robert Marquette ( Libertarian ) Ohio Portman, Rob Rob Portman Republican Incumbent re-elected. √ Rob Portman ( Republican ) 58.0 % Ted Strickland ( Democratic ) 37.1 % Joseph DeMare ( Green ) Oklahoma Lankford, James James Lankford Republican 2014 ( Special ) Incumbent re-elected. √ James Lankford ( Republican ) 67.7 % Mike Workman ( Democratic ) 24.5 % Robert Murphy ( Libertarian ) Oregon Wyden, Ron Ron Wyden Democratic 1996 ( Special ) 1998 Incumbent re-elected. √ Ron Wyden ( Democratic ) 56.1 % Mark Callahan ( Republican ) 33.35 % Jim Lindsay ( Libertarian ) Eric Navickas ( Green ) Pennsylvania Toomey, Pat Pat Toomey Republican Incumbent re-elected. √ Pat Toomey ( Republican ) 48.9 % Katie McGinty ( Democratic ) 47.2 % Edward Clifford ( Libertarian ) South Carolina Scott, Tim Tim Scott Republican 2013 ! 2013 ( Appointed ) 2014 ( Special ) Incumbent re-elected. √ Tim Scott ( Republican ) 60.5 % Thomas Dixon ( Democratic ) 37.0 % Bill Bledsoe ( Libertarian ) South Dakota Thune, John John Thune Republican Incumbent re-elected. √ John Thune ( Republican ) 71.8 % Jay Williams ( Democratic ) 28.2 % Utah Lee, Mike Mike Lee Republican Incumbent re-elected. √ Mike Lee ( Republican ) 68.1 % Misty K. Snow ( Democratic ) 27.1 % Stoney Fonua ( Independent American ) Bill Barron ( unaffiliated ) Vermont Leahy, Patrick Patrick Leahy Democratic 1980 1986 1992 1998 Incumbent re-elected. √ Patrick Leahy ( Democratic ) 59.9 % Scott Milne ( Republican ) 32.3 % Pete Diamondstone ( Liberty Union ) Cris Ericson ( Marijuana ) Jerry Trudell ( unaffiliated ) Washington Murray, Patty Patty Murray Democratic 1992 1998 Incumbent re-elected. √ Patty Murray ( Democratic ) 59.04 % Chris Vance ( Republican ) 40.96 % Wisconsin Johnson, Ron Ron Johnson Republican Incumbent re-elected. √ Ron Johnson ( Republican ) 50.19 % Russ Feingold ( Democratic ) 46.84 % Phil Anderson ( Libertarian ) Complete List of races Thirty - four seats were up for election in 2016 : 7 Democrats and 21 Republicans sought re-election. 5 Senators ( 3 Democrats, 2 Republicans ) retired. Alabama Main article : United States Senate election in Alabama, 2016 Five - term Senator Richard Shelby ( Republican ) was re-elected with 65 % of the vote in 2010. He was 82 years old in 2016. He ran for re-election. He served in the Senate as a Democrat until switching parties in 1994. Shelby ran for re-election and faced four challengers in the Republican primary : ex-state Senator Shadrack McGill, former Marine and Birmingham businessman Jonathan McConnell, Marcus Bowman, and John Martin. On March 1, Shelby won the primary with 65 % of the vote. There were two Democratic candidates : Ron Crumpton, patient rights advocate, and Charles Nana. Crumpton won the primary with 56 % of the vote. Sen. Shelby won re-election with 63.9 % of the vote. Alaska Main article : United States Senate election in Alaska, 2016 Two - term Senator Lisa Murkowski ( Republican ) was appointed in 2002 and elected to a full term in 2004. She was defeated in the Republican primary in 2010 by Joe Miller. She later ran as a write - in candidate in the 2010 general election and was re-elected to a second full term with 40 % of the vote, making her one of two senators in US history to win election via write - in votes. She was 59 years old in 2016. She ran for re-election. Thomas Lamb, a candidate for the State House in 2006, and Bob Lochner filed to run against Murkowski. Other potential Republican primary challengers included 2010 nominee and 2014 candidate Joe Miller, State Senator Mike J. Dunleavy, former Lieutenant Governor Mead Treadwell, and former Mayor of Anchorage Dan Sullivan. The only person to file for the Democratic primary as of May 20 was writer and satirist Richard Grayson, who previously sought election to Wyoming 's House seat in 2014. Potential Democratic candidates included State Senator Dennis Egan, State Representative Andy Josephson, State Senator Bill Wielechowski, State Senator Hollis French and State Senate Minority Leader Johnny Ellis. Former Senator Mark Begich was mentioned as a possible candidate, but he declined to run. Murkowski won her primary on August 16, 2016 with 72 percent of the vote. Joe Miller received the Libertarian nomination and will run against Murkowski in the general election. Anchorage attorney and veteran Margaret Stock ran as an Independent candidate. Sen. Murkowski won re-election with 44 % of the vote compared to Miller with 30 % and Metcalfe with 11 %. 15 % went to other candidates. Murkowski has been re-elected three times now with 48 % in 2004, 39.5 % in 2010 and 44 % in 2016, never having won a majority. Arizona Main article : United States Senate election in Arizona, 2016 Five - term Senator and Republican presidential candidate in 2008 John McCain was re-elected with 59 % of the vote in 2010. He was 80 years old in 2016. Despite speculation that he might retire, McCain ran for re-election. McCain faced primary challenges from Fair Tax activist Alex Meluskey, businessman David Pizer, talk radio host Clair Van Steenwyk, and State Senator Kelli Ward. David Pizer later dropped out of the race. Representatives Matt Salmon and David Schweikert were both mentioned as possible candidates, but both chose not to run. Other potential Republican candidates included former Governor Jan Brewer, businesswoman and 2014 gubernatorial candidate Christine Jones, former Governor of Alaska and 2008 vice presidential candidate Sarah Palin, former U.S. Representative John Shadegg, and former Arizona Attorney General Grant Woods. Congresswoman Ann Kirkpatrick and teacher Lennie Clark ran for the Democratic nomination. Lennie Clark dropped out and Ann Kirkpatrick became the Democratic nominee. Other potential Democratic candidates included U.S. Representative Ruben Gallego, former Surgeon General and 2012 nominee Richard Carmona, 2014 gubernatorial nominee Fred DuVal, Phoenix Mayor Greg Stanton, and retired astronaut Mark Kelly, who is the husband of ex-Congresswoman Gabrielle Giffords. Sen. McCain won re-election with 53 % to Kirkpatrick 's 41 %. Arkansas Main article : United States Senate election in Arkansas, 2016 One - term Senator John Boozman ( Republican ) defeated two - term Senator Blanche Lincoln with 58 % of the vote in 2010. He was 65 years old in 2016. Despite speculation that he might retire following health problems, Boozman ran for re-election. Fellow Republican Curtis Coleman, who ran against Boozman in 2010 but came in fifth place, ran again. Conner Eldridge, the former U.S. Attorney for the Western District of Arkansas, is the only Democrat who met the filing deadline. Frank Gilbert is the candidate for the Libertarian Party, and Jason Tate was running a write - in campaign. Sen. Boozman won re-election with 60 % to Eldridge 's 36 %. California Main article : United States Senate election in California, 2016 Four - term Senator Barbara Boxer ( Democrat ) was re-elected with 52 % of the vote in 2010. Boxer declined to run for re-election. California Attorney General Kamala Harris and U.S. Representative Loretta Sanchez, both Democrats, finished first and second, respectively, in California 's nonpartisan blanket primary, and will contest the general election. As such, Boxer 's successor is guaranteed to be a Democrat. This marks a historic first such occasion in California, ever since the Senate elections began in 1914. Other Democrats on the primary ballot included `` President '' Cristina Grappo, Massie Munroe, Herbert Peters, Emory Rogers, and Steve Stokes. Among the potential candidates who declined to run were Governor Jerry Brown, Lieutenant Governor Gavin Newsom, U.S. Representatives Xavier Becerra and Adam Schiff, and Los Angeles Mayor Eric Garcetti. Former state Republican Party chairs Tom Del Beccaro and Duf Sundheim, and former State Senator Phil Wyman ran, along with Don Krampe, Tom Palzer, Karen Roseberry, Greg Conlon, Von Huogo, Jerry Laws, Ron Unz, Jarrell Williamson, and George Yang. State Assemblymen Rocky Chavez was running as well, but withdrew from the race. Republicans who were once considered potential candidates but ruled out runs included San Diego Mayor Kevin Faulconer, former Assistant Secretary of the Treasury for Financial Stability and 2014 gubernatorial nominee Neel Kashkari, U.S. Representative Darrell Issa, and businesswoman and nominee for the U.S. Senate in 2010 Carly Fiorina. Independent Mike Beitiks ran on a single - issue climate change platform. Polling conducted by the SurveyUSA from March 30, 2016 to April 3, 2016 indicated that Harris was ahead with 26 %, compared to Rep. Sánchez with 22 %, Del Beccaro with 8 %, Wyman with 8 %, and Sundheim with 3 % ; 7 % of those polled were supporting other candidates, and 24 % were undecided. Harris won the election with 62 % of the vote to Sanchez 's 38 %. Colorado Main article : United States Senate election in Colorado, 2016 One - term Senator Michael Bennet ( Democrat ) was appointed in 2009 and elected to a full term with 48 % of the vote in 2010. He was 51 years old in 2016. He ran for re-election. Businessman Robert Blaha, former Aurora councilman Ryan Frazier, El Paso County Commissioners Darryl Glenn, and Peggy Littleton, former Colorado State University Athletic Director Jack Graham, State Representative Jon Keyser, former SBA director Greg Lopez, State Senator Tim Neville, and Jefferson County Commissioner Donald Rosier ran for the Republican nomination. Glenn, Graham, Blaha, Keyser, and Frazier actually competed in the primary. Darryl Glenn won the Republican nomination with 37 % of the vote against four other opponents. Bennet won re-election with 50 % of the vote to Glenn 's 44 %. Connecticut Main article : United States Senate election in Connecticut, 2016 One - term Senator Richard Blumenthal ( Democrat ) was elected with 55 % of the vote in 2010. He was 70 years old in 2016. He ran for re-election. State Representative Dan Carter, apparel company CEO and 2004 Senate nominee Jack Orchulli, and former Olympic athlete August Wolf ran for the Republican nomination. Another potential candidate was former West Hartford Town Councilor Joe Visconti, who ran for CT - 01 in 2008 and ran as an Independent for Governor in 2014. Former U.S. Comptroller General and 2014 candidate for Lieutenant Governor David M. Walker, former U.S. Representative and 2010 candidate Rob Simmons, and economist and former CNBC television host Lawrence Kudlow declined to run. Blumenthal won re-election with 63 % of the vote to Carter 's 35 %. Florida Main article : United States Senate election in Florida, 2016 One - term Senator Marco Rubio ( Republican ) was elected in a three - way race with 49 % of the vote in 2010. In April 2014, Rubio stated that he would not run for both the Senate and President in 2016, as Florida law prohibits a candidate from appearing twice on a ballot. In April 2015, he announced that he would run for President and would not seek re-election. After suspending his campaign on March 15, 2016, Rubio announced on June 22, 2016 that he changed his mind and will run for re-election. U.S. Representative Ron DeSantis, combat veteran Todd Wilcox, real estate developer Carlos Beruff, retired college lecturer Ilya Katz, and Donald J. DeRenzo ran for the Republican nomination. Ben Carson, retired neurosurgeon and candidate for President in 2016 is also mentioned as a potential candidate. On June 17, 2016, U.S. Representative David Jolly withdrew from the race to run for re-election to his House seat, four days after Rubio began openly considering reversing his decision to not run for re-election. U.S. Representative Patrick Murphy defeated fellow representative Alan Grayson, as well as Pam Keith, Lateresa Jones, Richard Coleman, Sam Brian Gibbons, and Josh Larose, for the Democratic nomination. Murphy lost to incumbent Marco Rubio in the November general election on November 8. Sen. Rubio won re-election with 52 % of the vote compared to Murphy 's 44 %. Georgia Main article : United States Senate election in Georgia, 2016 Two - term Senator Johnny Isakson ( Republican ) was re-elected with 58 % of the vote in 2010. He was 71 years old in 2016. He ran for re-election. In 2015, Isakson announced he was being treated for Parkinson 's disease, but stated that his treatment would not interfere with his re-election campaign or his ability to serve another term. Mary Kay Bacallao, college professor, former Fayette County Board of Education member, and candidate for State Superintendent of Schools in 2014 and Derrick Grayson, candidate for the state 's other Senate seat in 2014, challenged Isakson for the Republican nomination. Isakson won the Republican nomination with more than three quarters of the vote. Investment firm executive Jim Barksdale, project manager Cheryl Copeland, and businessman John Coyne ran for the Democratic nomination. USAF veteran Jim Knox was running but dropped out of the race. Barksdale defeated Copeland in a close race to win the Democratic nomination. Sen. Isakson won re-election with 55 % to Barksdale 's 41 %. Hawaii Main article : United States Senate election in Hawaii, 2016 In 2012, Hawaii Governor Neil Abercrombie appointed Lieutenant Governor Brian Schatz ( Democrat ) to take the place of deceased nine - term Senator Daniel Inouye. Schatz won a 2014 special election to serve the remainder of Inouye 's term. Schatz ran for re-election. Former U.S. Representative and 2014 Senate candidate Colleen Hanabusa may challenge Schatz in the primary again, while U.S. Representative Tulsi Gabbard declined to seek the Democratic nomination for the seat. Charles Collins, a Republican who ran for the Senate in 2012 and for Governor in 2014, was seeking the nomination again, but withdrew from the race. Sen. Schatz won re-election with 74 % of the vote compared to Carroll 's 22 %. Idaho Main article : United States Senate election in Idaho, 2016 Three - term Senator Mike Crapo ( Republican ) was re-elected with 71 % of the vote in 2010. Crapo was 65 years old in 2016. He ran for re-election. U.S Representative Raul Labrador declined to challenge Crapo in the Republican primary. Jerry Sturgill ran for the Democratic nomination. Perennial candidate Pro-Life ran as an independent. He was defeated in the Constitution Party primary on May 17, 2016 to Ray J. Writz. Sen. Crapo was re-elected. Illinois Main article : United States Senate election in Illinois, 2016 One - term Senator Mark Kirk ( Republican ) was elected with 48 % of the vote in 2010. He was 57 years old in 2016. He ran for re-election. Kirk suffered a stroke in January 2012 that kept him away from the Senate until January 2013. In June 2013, he confirmed that he was planning to run for re-election, but speculation he might retire persisted. In November 2014, Kirk reiterated that he was going to run for re-election, saying : `` No frickin ' way am I retiring. '' Joe Walsh, a former U.S. Representative and conservative talk radio host, declined to challenge Kirk in the Republican primary. Two others filed for the right to challenge Senator Kirk in the primary : businessman James Marter, and Elizabeth Pahlke, but Pahlke was disqualified, so only Marter was on the ballot running against Kirk. On March 15, Kirk won the primary with 71 % of the vote. U.S. Representative Tammy Duckworth, President and CEO of the Chicago Urban League Andrea Zopp, and State Senator Napoleon Harris ran for the Democratic nomination. On March 15, Duckworth won the primary with 64 % of the vote. In December 2015, Jim Brown, a teacher and former businessman, announced he was running as an independent. Chris Aguayo, an Iraq / Afghan war Veteran and Veterans Party State Chair, announced he was running representing the Veterans Party. Rep. Duckworth unseated Sen. Kirk with 54 % compared to his 40 %. Indiana Main article : United States Senate election in Indiana, 2016 Three - term Senator Dan Coats ( Republican ) was elected with 55 % of the vote in 2010 ; Coats served in the Senate from 1989 to 1999 and then returned to serve another term from 2011 to 2017. Coats did not run for re-election. Republican candidates include U.S. Representatives Marlin Stutzman and Todd Young. Coats 's chief of Staff Eric Holcomb was a candidate, but withdrew from the race. Former U.S. Representative Baron Hill won the Democratic nomination on May 3, but withdrew in July 2016 in favor of Evan Bayh. Bayh held the seat from 1999 until his retirement in 2011, and also served as Governor of Indiana from 1989 to 1997. Former non-profit director John Dickerson also announced he was going to run, but suspended his campaign in early 2016. Former Sen. Bayh lost his bid to regain his seat to Rep. Young. Rep Young garnered 52 % to Bayh 's 42 % Iowa Main article : United States Senate election in Iowa, 2016 Six - term Senator Chuck Grassley was re-elected with 65 % of the vote in 2010. He was 83 years old in 2016. He ran for re-election. Talk radio host Robert Rees announced he was going to challenge Grassley for the nomination, but later withdrew. Former Lt Governor Patty Judge earned the Democratic nomination by defeating State Senator Rob Hogg, former state Senator Tom Fiegen, and former state representative Bob Krause. Former state representative Ray Zirkelbach briefly ran but ended his campaign soon after. Sen. Grassley won re-election with 60 % to Judge 's 36 %. Kansas Main article : United States Senate election in Kansas, 2016 One - term Senator Jerry Moran ( Republican ) was elected with 70 % of the vote in 2010. He was 62 years old in 2016. He ran for re-election. Radiologist and 2014 Senate candidate Milton R. Wolf and U.S. Representative Tim Huelskamp declined to run. Patrick Wiesner, an attorney and a candidate for the Senate in 2010 and 2014, defeated Monique Singh - Bey for the Democratic nomination. Potential candidates who declined to run included Wichita Mayor Carl Brewer, 2014 Governor nominee Paul Davis, former Kansas City Mayor Joe Reardon, former U.S. Representative and 2008 nominee Jim Slattery, and 2014 KS - 02 nominee Margie Wakefield. Sen. Moran won re-election with 62 % to Wiesner 's 32 %. Kentucky Main article : United States Senate election in Kentucky, 2016 One - term Senator Rand Paul ( Republican ) was elected with 56 % of the vote in 2010. He was 53 years old in 2016. Paul filed for re-election, although he was also running for President of the United States in 2016. Although Kentucky law did not allow for a candidate to appear twice on the same ballot, Paul successfully convinced the Kentucky GOP to adopt a caucus system for 2016, allowing Paul to run for president and for the Senate simultaneously. Kentucky law still bars Paul from appearing twice on the ballot in the general election. However, on February 3, 2016, Paul ended his campaign for the presidency and ran for reelection. James Gould and Stephen Slaughter filed to run against Paul. Paul won the Republican primary, receiving 169,180 votes ( about 85 % ) ; James R. Gould received 16,611 ( about 8 % ) and Stephen Howard Slaughter received 13,728 ( about 7 % ). Lexington Mayor Jim Gray, Rory Houlihan, Ron Leach, Sellus Wilder Jeff Kender, Tom Recktenwald ( who was a candidate in 2014 ), and Grant Short ran for the Democratic nomination. Gray won the nomination. Paul won re-election with 57 % of the vote to Gray 's 43 %. Louisiana Main article : United States Senate election in Louisiana, 2016 Two - term Senator David Vitter ( Republican ) was re-elected with 57 % of the vote in 2010. After losing the 2015 gubernatorial race, Vitter chose to retire from the Senate at the end of his term. Republicans who ran for the seat included U.S. Representatives Charles Boustany and John Fleming, former U.S. Representative Joseph Cao, State Treasurer John Neely Kennedy, retired U.S. Air Force Colonel Rob Maness, and former Louisiana State Representative David Duke. Other potential Republican candidates included Public Service Commissioner Erik Skrmetta, 2014 candidate for LA - 05 Zach Dasher, state representative Paul Hollis, and former President of Jefferson Parish John Young. Democratic candidates included Public Service Commissioner Foster Campbell, attorney Derrick Edwards, Caroline Fayard, an attorney and candidate for Lieutenant Governor in 2010, and businessman Josh Pellerin. Other potential Democratic candidates included state legislators Robert Johnson, Eric LaFleur, and Gary Smith, Jr., and Mayor of Alexandria Jacques Roy. Former U.S. Senator Mary Landrieu and her brother, New Orleans Mayor Mitch Landrieu, declined to run. As no candidate won a majority of the vote in the `` jungle primary '', a runoff election was held on December 10 to choose between Kennedy and Campbell ( the 2 candidates with the most votes in the primary ). John Kennedy was declared the winner of the runoff election with 61 % of the vote to Campbell 's 39 %. Maryland Main article : United States Senate election in Maryland, 2016 Five - term Senator Barbara Mikulski ( Democrat ) was re-elected with 62 % of the vote in 2010. She is the longest - serving female Senator and the longest - serving woman in the history of the U.S. Congress. She is not seeking re-election. The candidates who filed for the Democratic nomination were : U.S. Representatives Donna Edwards and Chris Van Hollen, Freddie Donald Dickson, Jr., Ralph Jaffe, Theresa Scaldaferri, Charles Smith, Violate Staley, Blaine Taylor, Ed Tinus, and Lih Young. Van Hollen won the April 26 primary. The Republican candidates who filed were former Deputy Assistant Secretary of Defense and Senate candidate in 2012 Richard Douglas, Chrys Kefalas, State Delegate Kathy Szeliga, Chris Chaffee, Sean Connor, John Graziani, Greg Holmes, Joseph David Hooe, Mark McNicholas, Lynn Richardson, Anthony Seda, Richard Shawver, Dave Walle, and Garry T. Yarrington. Szeliga won the primary and will face Van Hollen in the general election. Rep. Van Hollen won election to the Senate with 61 % of the vote to Szeliga 's 36 %. Missouri Main article : United States Senate election in Missouri, 2016 One - term Senator Roy Blunt ( Republican ) was elected with 54 % of the vote in 2010. He was 66 years old in 2016. He ran for re-election. Former U.S. Representative and 2012 Senate nominee Todd Akin was rumored to be a possible candidate, but declined to run. Three candidates ran against Blunt for the Republican nomination, the best - known being sales manager, tea party activist, and 2010 candidate Kristin Nichols, but Blunt won decisively with 72 % of the vote. For the Democrats, Secretary of State Jason Kander easily won the nomination, defeating Robert Mack, Pastor Cori Bush and activist Chief Wana Dubie. Governor Jay Nixon and State Treasurer Clint Zweifel chose not to seek election to the Senate. Sen. Blunt won re-election with 49 % of the vote to Kander 's 46 %. Nevada Main article : United States Senate election in Nevada, 2016 Five - term Senator and Senate Minority Leader Harry Reid ( Democrat ) was re-elected with 50 % of the vote in 2010. Reid is not seeking re-election. Former Nevada Attorney General Catherine Cortez Masto earned the Democratic nomination, defeating Bobby Mahendra, Liddo Susan O'Briant, and Allen Rheinhart in the primary on June 14, 2016. Congressman Joe Heck defeated eight candidates, including 2010 nominee Sharron Angle, who ran against Reid in 2010, for the Republican nomination. Jarrod M. Williams, an independent candidate ran for the seat. He describes himself as a Democratic Socialist, a supporter of Bernie Sanders, and is a member of the Socialist Party USA, although the party does n't have a chapter in the State of Nevada. Cortez Masto was elected with 47.1 % of the vote to Heck 's 44.7 %. New Hampshire Main article : United States Senate election in New Hampshire, 2016 One - term Senator Kelly Ayotte ( Republican ) was elected with 60 % of the vote in 2010. She was 48 years old in 2016. Ayotte ran for re-election. Jim Rubens, a former state senator, candidate for Governor in 1998 and for the Senate in 2014, announced a challenge to Ayotte in the primary, but Ayotte won the nomination. Brian Chabot is the Libertarian candidate for US Senate in 2016. He is a relative newcomer to politics, having run for US Senate in 2010 and US Representative in 2014. Governor Maggie Hassan ran for the Democratic nomination. Other potential candidates include Executive Councilor Chris Pappas, State Senators Dan Feltes and Donna Soucy, Portsmouth City Councilor and daughter of U.S. Senator Jeanne Shaheen Stefany Shaheen, and campaign manager for Senator Shaheen Mike Vlacich. A series of polls taken by WMUR / UNH in February, April, and July 2016, as well as WBUR polls taken in May and July / August, show Hassan gaining support over time and now leading Ayotte. Gov. Hassan won a very close election, 353,978 or 47.97 %, to Sen. Ayotte 's 353,262 or 47.87 %, a difference of 716 votes. Sen. Ayotte conceded the race to Gov. Hassan around noon Wednesday November 9, 2016. New York Main article : United States Senate election in New York, 2016 Three - term Senator Chuck Schumer ( Democrat ) was re-elected with 66 % of the vote in 2010. He was 66 years old in 2016. He ran for re-election. Chuck Schumer has been elected leader of the Senate Democrats succeeding Harry Reid. Wendy Long, the Republican nominee in 2012, ran as the nominee of Republican, Conservative, and Reform Parties. Other potential Republican candidates included U.S. Representatives Chris Gibson and Peter T. King. U.S. Representative Richard L. Hanna, Manhattan Republican Party Chairwoman Adele Malpass, and former CNBC television host Larry Kudlow were also mentioned as possible candidates, but all have declined to run. Robin Laverne Wilson, the Green Party of New York nominee, received 1.5 % of the vote. Alex Merced, the Libertarian Party candidate, received 0.7 % of the vote. North Carolina Main article : United States Senate election in North Carolina, 2016 Two - term Senator Richard Burr ( Republican ) was re-elected with 55 % of the vote in 2010. He was 61 years old in 2016. There had been speculation that Burr might retire, but he ran for re-election. Three Republicans challenged Burr in the primary : Greg Brannon, Larry Holmquist, and former Superior Court Judge Paul Wright. On March 15, Burr won the primary with 61 % of the vote. Former state representative Deborah Ross, Spring Lake Mayor Chris Rey, businessman Kevin Griffin, and retired U.S. Army Captain Ernest Reeves ran for the Democratic nomination. Former U.S. Senator Kay Hagan, state treasurer Janet Cowell, and Anthony Foxx, the United States Secretary of Transportation and former Mayor of Charlotte, declined to run. On March 15, Ross won the primary with 62 % of the vote. Burr won re-election 51 % to 45 % for Ross. North Dakota Main article : United States Senate election in North Dakota, 2016 One - term Senator John Hoeven ( Republican ) was elected with 76 % of the vote in 2010. He was 59 years old in 2016. He ran for re-election. Democrats endorsed state representative Eliot Glassheim On November 7, 2015, the Libertarian party nominated Robert Marquette. Hoeven defeated Glassheim 78 % to 17 %. Ohio Main article : United States Senate election in Ohio, 2016 One - term Senator Rob Portman ( Republican ) was elected with 57 % of the vote in 2010. He was 60 years old in 2016. He ran for re-election. He had considered running for President, but decided not to. Two candidates filed to challenge him : Don Elijah Eckhart, who ran for OH - 15 as an independent in 2008, and Melissa Strzala, but Strzala was disqualified. On March 15, Portman won the primary with 82 % of the vote. Former Governor and Congressman Ted Strickland, Cincinnati City Councilman P.G. Sittenfeld, and occupational therapist Kelli Prather ran for the Democratic nomination. Former State Representative Bob Hagan had filed papers to run, but later withdrew from the race. On March 15, Strickland won the primary with 65 % of the vote. Joseph DeMare, a machinist from Bowling Green, is the Green Party candidate. He ran unopposed in the March 15, 2016 primary, and received enough votes to substantially increase the number of enrolled Green Party members. In Ohio, the only way to join a political party is to vote in that Party 's primary. Oklahoma Main article : United States Senate election in Oklahoma, 2016 Two - term Senator Tom Coburn ( Republican ) was re-elected with 71 % of the vote in 2010, but chose to leave office before the end of his term after being diagnosed with prostate cancer. James Lankford won the 2014 special election to serve the remainder of Coburn 's term. Lankford ran for re-election. Former Congressman Dan Boren was viewed by some Oklahoma political operatives as the only Democrat who could make the 2016 race competitive, but was seen as unlikely to run. Lankford 's 2014 special election opponent Constance N. Johnson has said that she plans to run again. Oregon Main article : United States Senate election in Oregon, 2016 Three - term Senator Ron Wyden ( Democrat ) was re-elected with 57 % of the vote in 2010. He was 67 years old in 2016. He ran for re-election. Medford City Councilor Kevin Stine and retired locomotive engineer Paul Weaver challenged Wyden for the Democratic nomination. Wyden won the Democratic nomination. Information technology consultant and 2014 candidate Mark Callahan, businessman Sam Carpenter, business consultant Dan Laschober, Steven Reynolds, and Lane County commissioner Faye Stewart ran for the Republican nomination. Callahan won the Republican nomination. Pennsylvania Main article : United States Senate election in Pennsylvania, 2016 One - term Senator Pat Toomey ( Republican ) was elected with 51 % of the vote in 2010. He was 54 years old in 2016. Toomey ran for re-election. Everett Stern, a security intelligence consultant and whistleblower of the HSBC money laundering scandal, announced that he would challenge Toomey for the Republican nomination, but has missed the filing deadline, so Toomey was unopposed in the primary. Democratic candidates included Katie McGinty, former Chief of Staff to Governor Tom Wolf and former Secretary of the Pennsylvania Department of Environmental Protection, former Congressman Joe Sestak, who defeated incumbent Senator Arlen Specter ( a Democrat turned Republican turned back to Democrat ) for the 2010 Democratic nomination, but lost to Toomey in the general election, the current mayor of Braddock, Pennsylvania, John Fetterman, who is an AmeriCorps alum and Harvard University graduate, and small businessman and senate candidate in 2010 and 2012 Joseph Vodvarka. Allentown Mayor Ed Pawlowski announced his candidacy for the seat but suspended his campaign due to an FBI investigation of Allentown. McGinty won the primary and faced Toomey in the general election on November 8, 2016. Toomey defeated McGinty and retained the seat. South Carolina Main article : United States Senate election in South Carolina, 2016 Two - term Republican Senator Jim DeMint ( Republican ) was re-elected with 61 % of the vote in 2010. He resigned at the start of 2013 to become President of The Heritage Foundation and U.S. Representative Tim Scott ( Republican ) of South Carolina 's 1st congressional district was appointed to replace DeMint by Governor Nikki Haley. Scott subsequently won the special election in 2014 for the remaining two years of the term. Scott ran for re-election and he was a potential Republican vice presidential nominee. Other potential Republican candidates include Congressmen Mick Mulvaney, Jeff Duncan and Mark Sanford, along with State Senator Tom Davis, State Treasurer Curtis Loftis and State Attorney General Alan Wilson. Darla Moore was mentioned as a potential candidate for either party. On the Democratic side, pastor Thomas Dixon ran in the general primary on November 8, 2016 but was defeated by the incumbent, Scott. South Dakota Main article : United States Senate election in South Dakota, 2016 Two - term Senator John Thune ( Republican ) ran unopposed and was re-elected with 100 % in 2010. Jay Williams, Chair of the Yankton County Democratic Party, and candidate for the State House in 2010 and 2014, is running for the Democratic nomination. Other potential Democratic candidates include State Senator Bernie Hunhoff and filmmaker and former television news producer Sam Hurst. Former U.S. Representative Stephanie Herseth Sandlin, Sioux Falls Mayor Mike Heuther, and 2014 nominee Rick Weiland all declined to run. Utah Main article : United States Senate election in Utah, 2016 One - term Senator Mike Lee ( Republican ) was elected with 62 % of the vote in 2010. He was 45 years old in 2016. He ran for re-election. State party chair Thomas Wright, former State Senator Dan Liljenquist, State Senator Aaron Osmond, Congressman Jason Chaffetz, Congressman Chris Stewart, former Governor of Utah Mike Leavitt, and Mitt Romney 's son Josh Romney were mentioned as potential primary challengers, but all declined to run. Lee ran unopposed at the Utah Republican convention and is the Republican nominee. Marriage therapist Jonathan Swinton and grocery store clerk Misty Snow, a transgender woman, ran for the Democratic nomination. Snow defeated Swinton by more than 20 percentage points, running to the left of Swinton, criticizing him for supporting limitations on abortion rights. She became the first transgender woman to become a major party 's nominee for the Senate. Vermont Main article : United States Senate election in Vermont, 2016 Seven - term Democratic Senator Patrick Leahy was re-elected with 64 % of the vote in 2010. Leahy won re-election in 2016, aged 76. Scott Milne, the Republican nominee who narrowly lost the 2014 Vermont gubernatorial election, ran unsuccessfully against Leahy. Washington Main article : United States Senate election in Washington, 2016 Four - term Senator Patty Murray ( Democrat ) was re-elected with 52 % of the vote in 2010. She ran successfully for re-election against Republican candidate Chris Vance. Congressman Dave Reichert was considered a potential Republican candidate but chose to run for reelection. Wisconsin Main article : United States Senate election in Wisconsin, 2016 One - term Senator Ron Johnson ( Republican ) defeated three - term Senator Russ Feingold ( Democrat ) with 52 % of the vote in 2010. On May 14, 2015, Feingold announced that he would seek a rematch against Johnson for his former Senate seat. Immediately after his announcement, the Democratic Senatorial Campaign Committee endorsed Feingold 's candidacy. Businesswoman and 2014 gubernatorial nominee Mary Burke has declared that she is not seeking statewide office in 2016. Johnson and Feingold faced each other again, and Johnson again defeated Feingold, in what many observers and pundits considered to be a surprising and uphill victory. See also United States elections, 2016 ( other elections being held at the same time ) United States House of Representatives elections, 2016 United States presidential election, 2016 United States gubernatorial elections, 2016 United States Senate elections, 2010 ( the previous election for this class of Senators ) References Jump up ^ `` WaunaKeegan Results ''. WaunaKeegan. Retrieved January 13, 2017. Jump up ^ There Were No Purple * States On Tuesday. FiveThirtyEight. November 10, 2016. Jump up ^ Bobic, Igor ( November 5, 2014 ). `` Independent Angus King Will Continue To Caucus With Senate Democrats ''. Huffington Post. Retrieved November 6, 2014. 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Jump up ^ `` Former Red Sox Pitcher Running for Vermont Governor ''. necn. May 24, 2016. Retrieved June 1, 2016. Jump up ^ Shabad, Rebecca. `` Sen. Murray to seek her fifth term in 2016 ''. The Hill. Retrieved February 10, 2014. ^ Jump up to : Pathe, Simone ( September 8, 2015 ). `` Former Washington GOP Chairman to Challenge Patty Murray ''. Roll Call. ^ Jump up to : Bolton, Alexander. `` Sen. Johnson tells ' kitchen cabinet ' he will run for reelection in 2016 ''. The Hill. Retrieved October 22, 2013. ^ Jump up to : `` Russ Feingold Announces Senate Run, Setting Up Rematch ''. NBC News. May 14, 2015. Retrieved May 14, 2015. Jump up ^ Reynolds, Mitch. `` A Libertarian looking to make waves in Senate race with Johnson, Feingold ''. ^ Jump up to : `` Alabama Primary 2016 : Who qualified for the ballot ? ''. AL.com. November 6, 2015. ^ Jump up to : `` Alabama Primary Results ''. The New York Times. Retrieved March 4, 2016. Jump up ^ `` Crumpton for United States Senate ''. ^ Jump up to : `` August 16, 2016 Primary Candidate List ''. State of Alaska Division of Elections. Retrieved March 6, 2016. Jump up ^ Pathe, Simone ( May 15, 2015 ). `` Murkowski Facing a Primary Puzzle ''. Roll Call. Jump up ^ Neary, Ben ( June 13, 2013 ). `` The Only Democrat Running For Congress In Wyoming Might Host A ' Campaign Rave ' ''. Associated Press. Retrieved May 20, 2016. Jump up ^ Lawrence, Tom ( November 6, 2014 ). `` EDITORIAL : Lessons we learned from Election Day ''. Powell Tribune. Retrieved May 20, 2016. Jump up ^ John, Arit ( June 13, 2014 ). `` Wyoming 's Democratic ' Hip Hop Candidate ' Just Launched the PPLZ 4 GRAYSON CREW ''. The Wire. Retrieved May 20, 2016. Jump up ^ Trygstad, Kyle ( February 13, 2013 ). `` Farm Team : Absence of Opportunity Means Long Alaska Pipeline ''. Roll Call. Retrieved December 12, 2013. Jump up ^ Sullivan, Sean ( February 2, 2015 ). `` Why Mark Begich could run for the Senate again ''. The Washington Post. Retrieved February 16, 2015. Jump up ^ Bohrer, Becky ( February 16, 2016 ). `` Begich says he wo n't run for any office this year ''. Alaska Dispatch News. Retrieved February 18, 2016. Jump up ^ Kelly, Devin ( February 17, 2016 ). `` Anchorage attorney Margaret Stock challenging Lisa Murkowski for Senate ''. Alaska Dispatch News. Retrieved February 19, 2016. Jump up ^ Trujillo, Mario ( September 13, 2013 ). `` McCain hints at retirement in 2016 ''. The Hill. Retrieved September 14, 2013. Jump up ^ Rose, Shannon ( February 21, 2015 ). `` Alex Meluskey Runs for US Senate in Arizona ''. Jump up ^ `` Pizer, known for upholstery, cryonics, is latest McCain foe ''. Arizona Daily Star. November 9, 2015. Retrieved November 9, 2015. Jump up ^ `` Letters to the Editor : Why I 'm Running for US Senate ''. June 10, 2015. Retrieved December 5, 2015. Jump up ^ `` Havasu 's Kelli Ward confirms Senate challenge against John McCain ''. Havasu News. July 14, 2015. Retrieved July 15, 2015. Jump up ^ Wong, Scott ; Joseph, Cameron ( January 28, 2015 ). `` Tea Party lawmakers may take on McCain ''. The Hill. Jump up ^ Wong, Scott ( January 29, 2015 ). `` Salmon tells McCain : I wo n't primary you ''. The Hill. Jump up ^ Nowicki, Dan ( January 16, 2016 ). `` Maricopa County GOP slams McCain again, but Schweikert wo n't run ''. The Arizona Republic. Jump up ^ Mataconis, Doug ( March 12, 2014 ). `` Arizona Governor Jan Brewer Will Not Run For Re-election ''. Outside the Beltway. Jump up ^ `` Schweikert, Jones possible McCain primary foes in 2016 ? ''. AZ Central. November 29, 2014. Retrieved December 3, 2014. Jump up ^ `` After Obama 's Immigration Action, a Blast of Energy for the Tea Party ''. The New York Times. November 25, 2014. Retrieved December 3, 2014. ^ Jump up to : Nowicki, Dan ( February 16, 2013 ). `` Is this Sen. McCain 's last term ? ''. The Arizona Republic. Retrieved September 21, 2013. Jump up ^ millansingh ( September 21, 2015 ). `` Pro-Bernie Candidate for Senate... in Arizona ''. ^ Jump up to : Cheney, Kyle ( December 29, 2014 ). `` 16 in ' 16 : The new battle for the Senate ''. Politico. Retrieved January 1, 2015. Jump up ^ Sanders, Rebekah L. ( March 21, 2015 ). `` Gosar wo n't challenge McCain ''. The Arizona Republic. Retrieved March 24, 2015. Jump up ^ `` Arkansas US Sen. John Boozman Having Surgery ''. ABC News. April 22, 2014. Retrieved April 22, 2014. Jump up ^ `` Senate Democrats look to next elections ''. The Hill. March 27, 2014. Retrieved October 25, 2014. Jump up ^ `` Curtis Coleman indicates he 'll take on incumbent Sen. John Boozman ''. Arkansas Times. November 9, 2015. Retrieved November 10, 2015. Jump up ^ Brantley, Max ( September 9, 2015 ). `` Conner Eldridge announces plans to run for U.S. Senate ''. Arkansas Times. Retrieved September 21, 2015. Jump up ^ `` Arkansas Libertarians nominate twenty - three candidates, including Frank Gilbert for U.S. Senate ''. Independent Political Report. October 25, 2015. Retrieved November 10, 2015. Jump up ^ `` Candidate Information ''. Arkansas Secretary of State. Retrieved February 4, 2016. Jump up ^ `` Frank Gilbert, U.S. Senate ''. Libertarian Party of Arkansas. Retrieved February 4, 2016. Jump up ^ `` Candidate Information ''. Arkansas Secretary of State. Retrieved February 4, 2016. Jump up ^ Everett, Burgess ( January 8, 2015 ). `` Barbara Boxer : Wo n't run again in 2016 ''. Politico. Retrieved January 8, 2015. Jump up ^ `` U.S. Senate - Statewide Results ''. California Secretary of State. Retrieved June 9, 2016. Jump up ^ Nagourney, Adam ; Medina, Jennifer ( June 8, 2016 ). `` Just How Bad an Election Night Was It for California Republicans ? ''. The New York Times. Retrieved June 9, 2016. ^ Jump up to : `` Certified List of Candidates for Voter - Nominated Offices '' ( PDF ). Secretary of State of California. April 1, 2016. Retrieved April 5, 2016. Jump up ^ Cadelago, Christopher ( April 26, 2015 ). `` Republican Tom Del Beccaro announces U.S. Senate run ''. The Sacramento Bee. Jump up ^ `` Duf Sundheim enters race for Barbara Boxer 's Senate seat ''. Los Angeles Times. September 9, 2015. Jump up ^ Hrabe, John ( January 25, 2015 ). `` US Senate 2016 : Wyman joins list of GOP longshot candidates ''. CalNewsroom.com. Retrieved March 4, 2016. Jump up ^ `` Phil Wyman for United States Senate ''. Retrieved March 4, 2016. Jump up ^ Horseman, Jeff ( January 21, 2015 ). `` U.S. SENATE : Done Krampe of Murrieta to seek Barbara Boxer 's seat ''. The Press Enterprise. Jump up ^ Provost, Lee ( April 14, 2015 ). `` Palzer, former Kankakeean, makes run for US Senate in his new home of Calif. ''. Jump up ^ Roseberry, Karen ( October 28, 2015 ). `` Karen Roseberry for U.S. Senate 2016 ''. Jump up ^ Cadelago, Christopher ( March 5, 2015 ). `` Republican Rocky Chavez launches bid for U.S. Senate seat ''. Sacramento Bee. Retrieved March 15, 2015. Jump up ^ Cadelago, Christopher ( February 8, 2016 ). `` Chaves withdraws from U.S. Senate race, will seek re-election to Assembly ''. Sacramento Bee. Retrieved February 11, 2016. Jump up ^ Marinucci, Carla ( September 24, 2014 ). `` Carly Fiorina wo n't rule out run for White House ''. SF Gate. Retrieved September 26, 2014. Jump up ^ Smith, Heather ( May 29, 2015 ). `` California Senate candidate : `` We 're all going to die '' ``. Grist. Retrieved June 4, 2015. Jump up ^ `` Results of SurveyUSA Election Poll # 22817 ''. SurveyUSA. April 4, 2016. Retrieved April 5, 2016. Jump up ^ Frank, John ( January 14, 2016 ). `` Robert Blaha announces U.S. Senate bid, makes campaign pledge ''. The Denver Post. Retrieved January 21, 2016. Jump up ^ `` Former Aurora councilman Ryan Frazier joins GOP Senate race in Colorado ''. Aurora Sentinel. November 12, 2015. Retrieved November 13, 2015. Jump up ^ Matthews, Mark ( January 20, 2016 ). `` El Paso County 's Peg Littleton joins U.S. Senate race ''. The Denver Post. Retrieved January 21, 2016. Jump up ^ Lyell, Kelly ( January 29, 2016 ). `` Former CSU AD Jack Graham enters U.S. Senate race ''. Fort Collins Coloradoan. Retrieved February 1, 2016. Jump up ^ `` Jon Keyser announces 2016 Senate bid amid crowded Colorado field ''. The Denver Post. January 11, 2016. Retrieved January 11, 2016. Jump up ^ Bartels, Lynn ( July 6, 2015 ). `` Republican Greg Lopez, former SBA director, to run for U.S. Senate ''. The Denver Post. Retrieved October 14, 2015. Jump up ^ Frank, John ( September 28, 2015 ). `` Tim Neville to announce U.S. Senate bid as GOP race heats up ''. The Denver Post. Retrieved September 29, 2015. Jump up ^ Bunch, Joey ( December 9, 2015 ). `` Jefferson County commissioner to join race for U.S. Senate Thursday ''. The Denver Post. Retrieved December 17, 2015. Jump up ^ `` Donald Rosier - Timeline Photos ''. December 7, 2015. ^ Jump up to : Frank, John ( June 28, 2016 ). `` Darryl Glenn takes Colorado Republican nomination for U.S. Senate ''. The Denver Post. Retrieved June 29, 2016. Jump up ^ Vigdor, Neil ( April 12, 2016 ). `` Darien fashion label founder Orchulli to run for Senate ''. The Connecticut Post. Retrieved April 16, 2016. Jump up ^ Radelat, Ana ( May 4, 2015 ). `` Stamford Republican steps up to challenge Blumenthal ''. the CT Mirror. Retrieved May 15, 2015. Jump up ^ Vigdor, Neil ( May 1, 2015 ). `` Visconti exploring 2016 Senate run ''. Connecticut Post. Jump up ^ Hawkins, Dustin ( September 30, 2014 ). `` Democratic Seats up for Re-Election in 2016 ''. About News. Retrieved October 3, 2014. Jump up ^ Vigdor, Neil ( March 23, 2015 ). `` Walker wo n't challenge Blumenthal for Senate ''. Connecticut Post. Retrieved March 25, 2015. Jump up ^ Vigdor, Neil ( April 8, 2015 ). `` Simmons rules out 2016 challenge of Blumenthal ''. Connecticut Post. Retrieved April 9, 2015. Jump up ^ Everett, Burgess ( January 14, 2016 ). `` Kudlow said to be ' very interested ' in Senate run ''. Politico. Retrieved January 26, 2016. Jump up ^ Byers, Dylan ( February 16, 2016 ). `` CNBC 's Larry Kudlow will not run for Senate ''. CNNMoney. Retrieved February 18, 2016. Jump up ^ Berman, Matt ( April 2, 2014 ). `` Marco Rubio Wo n't Run for Senate in 2016 if He Runs for President ''. National Journal. Retrieved April 2, 2014. Jump up ^ `` Marco Rubio tells donors he 's running for president in 2016 ''. CBS News. April 13, 2015. Retrieved April 13, 2015. Jump up ^ Perry, Mitch ( July 8, 2015 ). `` Entrepreneur and combat veteran Todd Wilcox enters Florida 's U.S. Senate race ''. Saint Peters Blog. Jump up ^ Wallace, Jeremy ( February 24, 2016 ). `` Cuban - American developer Carlos Beruff launching campaign for U.S. Senate in Miami ''. Miami Herald. Retrieved February 26, 2016. Jump up ^ `` Katz for US Congress ''. Retrieved March 1, 2016. Jump up ^ `` US Elections -- Florida ''. Retrieved March 1, 2016. Jump up ^ `` 2016 Florida Elections ''. Retrieved March 1, 2016. Jump up ^ Bash, Dana ( March 2, 2016 ). `` GOP operatives to pitch Ben Carson on Florida Senate run ''. CNN. Retrieved March 2, 2016. Jump up ^ Kopan, Tal ( June 17, 2016 ). `` David Jolly drops out of Florida Senate race, possibly clearing way for Marco Rubio ''. CNN. Retrieved June 18, 2016. Jump up ^ `` Rubio defeats Murphy to retain Senate seat ''. November 9, 2016. Jump up ^ Rappeport, Alan ( June 10, 2015 ). `` Johnny Isakson, Georgia Senator, Says He Has Parkinson 's ''. The New York Times. Retrieved June 12, 2015. Jump up ^ Foody, Kathleen ( March 11, 2016 ). `` Qualifying for Georgia 's May primaries ends ''. WSB TV. Retrieved April 19, 2016. Jump up ^ Malloy, Daniel ( January 9, 2015 ). `` It looks like Johnny Isakson has his first challenger ''. The Atlanta Journal - Constitution. Retrieved May 15, 2015. ^ Jump up to : Bluestein, Greg ( May 24, 2016 ). `` Johnny Isakson trounces rivals to win Georgia GOP Senate nod ''. The Atlanta Journal Constitution. Retrieved June 16, 2016. Jump up ^ `` Southwest Georgia 's congressional delegation qualifies for re-election ''. The Albany Herald. March 8, 2016. Retrieved March 10, 2016. Jump up ^ Bluestein, Greg ( March 6, 2016 ). `` More Democrats come out of woodwork for Georgia Senate race ''. The Atlanta Journal - Constitution. Retrieved April 19, 2016. Jump up ^ Hankerson, Jazmyne ( April 8, 2016 ). `` Candidate changes affects May primary ballot ''. WXFL. Retrieved April 20, 2016. Jump up ^ Stephen O'Harrow ( August 18, 2014 ). `` Dan Inouye and Brian Schatz : A Lesson in Hawaii Politics ''. Honolulu Civil Beat. Jump up ^ Blair, Chad ( March 14, 2015 ). `` Tulsi Gabbard Looks to Be Running for Re-election ''. Honolulu Civil Beat. Jump up ^ `` Charles Collins for US Senate ''. January 22, 2016. Jump up ^ `` Charles Collins ''. January 25, 2016. Jump up ^ `` Crapo 's Message To Labrador ''. The Spokesman - Review. August 20, 2014. Retrieved September 3, 2014. Jump up ^ Easley, Jonathan ( February 13, 2015 ). `` Labrador wo n't run for Senate ''. The Hill. Retrieved February 16, 2015. Jump up ^ Brown, Nathan ( August 12, 2015 ). `` Federal Land, Refugees, and Regulations Drive Crapo Town Hall in Castleford ''. Twin Falls Times - News. Retrieved March 4, 2016. Jump up ^ `` Pro-Life For Governor of Idaho -- 2014, also US Senate -- 2016 ''. Retrieved March 4, 2016. Jump up ^ `` Official Primary Election Statewide Totals ''. Idaho Secretary of State. Retrieved July 20, 2016. Jump up ^ O'Keefe, Ed ( January 3, 2013 ). `` Mark Kirk makes dramatic return to the Senate ''. The Washington Post. Retrieved July 17, 2014. Jump up ^ Cooper, Matthew ( June 28, 2013 ). `` Mark Kirk Survived a Stroke -- Now He 's Picking Fights in Congress ''. National Journal. Archived from the original on July 1, 2013. Retrieved July 17, 2014. Jump up ^ Cahn, Emily ( June 12, 2013 ). `` Illinois Options Depend on Chicago Turnover Farm Team ''. Roll Call. Retrieved August 14, 2013. Jump up ^ Cahn, Emily ( November 14, 2014 ). `` Mark Kirk : ' No Frickin ' Way Am I Retiring ' ''. Roll Call. Retrieved January 1, 2015. Jump up ^ Mike Riopell ( November 30, 2015 ). `` Who 's in, who 's out in congressional primaries ''. Daily Herald. Retrieved December 1, 2015. Jump up ^ Greg Hinz ( October 5, 2015 ). `` Kirk picks up primary challenger from the right ''. Crain 's Chicago Business. Jump up ^ Rick Pearson ; Hal Dardick ( December 1, 2015 ). `` U.S. Senate, state 's attorney races take shape on the last day of filing ''. Chicago Tribune. Retrieved December 1, 2015. Jump up ^ `` 1 of Sen. Kirk 's GOP primary opponents does n't make ballot ''. KTVI. January 8, 2016. Retrieved January 17, 2016. ^ Jump up to : `` 2016 Illinois Primary Election Results ''. WBEZ 91.5 Chicago. March 15, 2016. Retrieved March 18, 2016. Jump up ^ Skiba, Katherine ( March 30, 2015 ). `` Duckworth to Challenge Kirk for U.S. Senate ''. Chicago Tribune. Retrieved March 30, 2015. Jump up ^ Sneed, Michael ( May 14, 2015 ). `` Andrea Zopp is all in for Senate race ''. Jump up ^ Hinz, Greg ( October 27, 2015 ). `` State Sen. Napoleon Harris to enter race against Mark Kirk ''. Jump up ^ `` 2016 Illinois Election, Primary, Candidates, Races, and Voting ''. USElections. December 2, 2015. Retrieved December 3, 2015. Jump up ^ `` Jim Brown Independent for U.S. Senate ''. Retrieved December 3, 2015. Jump up ^ `` Chris Aguayo for United States Senate ''. Retrieved June 15, 2016. Jump up ^ Cheney, Kyle ( March 24, 2015 ). `` Democrats see glimmer of hope in Dan Coats ' retirement ''. Politico. Retrieved March 28, 2015. Jump up ^ `` Rep. Marlin Stutzman declares Senate bid ''. Real Clear Politics. May 13, 2015. Retrieved May 16, 2015. Jump up ^ Joseph, Cameron ( March 26, 2015 ). `` Chief of staff launches Senate bid for Coats 's seat ''. The Hill. Jump up ^ `` Eric Holcomb drops out of Senate race ''. WRTV. February 8, 2016. Retrieved February 11, 2016. Jump up ^ `` Baron Hill says he will run for U.S. Senate in 2016 ''. The Republic. Columbus, Indiana. May 14, 2015. Retrieved May 15, 2015. Jump up ^ Groppe, Maureen ( August 15, 2015 ). `` John Dickerson to seek nod for U.S. Senate ''. Indianapolis Star. Retrieved October 14, 2015. Jump up ^ `` John Dickerson Drops Out of Race For U.S. Senate ''. January 21, 2016. Retrieved January 21, 2016. Jump up ^ Livingston, Abby ( September 20, 2013 ). `` Grassley Planning to Run Again in 2016 ''. Roll Call. Retrieved September 20, 2013. Jump up ^ Jacobs, Jennifer ; Noble, Jason ( March 31, 2015 ). `` And he 's off : Event kicks off Grassley 's re-election campaign ''. The Des Moines Register. Retrieved March 31, 2015. Jump up ^ Porter, Jake ( January 19, 2016 ). `` Primary Challenger Announces Against Grassley ''. Iowa Free Press. Retrieved February 18, 2016. Jump up ^ `` IA - Sen : Robert Rees ends GOP primary challenge to Chuck Grassley ''. Bleeding Heartland. March 15, 2016. Retrieved April 19, 2016. Jump up ^ `` Cedar Rapids State Sen. Rob Hogg running for U.S. Senate ''. KCRG 9. Cedar Rapids, Iowa. September 23, 2015. Retrieved September 23, 2015. Jump up ^ `` Tom Fiegen for US Senate, Iowa ''. Retrieved November 12, 2015. Jump up ^ `` Bob Krause for Iowa 's Future ''. Retrieved February 12, 2016. Jump up ^ Lynch, James Q. ( November 7, 2015 ). `` Zirkelbach is fourth candidate in Democratic U.S. Senate race ''. The Gazette. Retrieved February 20, 2016. Jump up ^ Levinson, Alexis ( July 29, 2014 ). `` In Kansas, Conservatives Suffer From Mississippi Hangover ''. Roll Call. Retrieved September 11, 2014. Jump up ^ Levinson, Alexis ( January 8, 2015 ). `` Congressman Says Wife Nixed Senate Run ''. Roll Call. Retrieved January 8, 2015. Jump up ^ Mason, Tori ( December 1, 2015 ). `` Topeka native announces candidacy for U.S. Senate ''. WIBW. Retrieved March 10, 2016. Jump up ^ Peters, Jeremy W. ; Rappeport, Alan ( April 7, 2015 ). `` Rand Paul Announces Presidential Run ''. The New York Times. Retrieved April 13, 2015. ^ Jump up to : Meyer, Theodoric ( August 22, 2015 ). `` Kentucky GOP greenlights joint Senate, presidential run for Rand Paul ''. Politico. Retrieved August 23, 2015. Jump up ^ CNN, John King, Manu Raju and Mark Preston. `` Rand Paul dropping out of presidential race ''. cnn.com. Retrieved July 25, 2016. ^ Jump up to : `` Candidate Filings with the Office of the Secretary of State ''. Secretary of State of Kentucky. Archived from the original on November 22, 2015. Jump up ^ `` Official 2016 Primary Election Results '' ( PDF ). Kentucky Secretary of State. May 17, 2016. Jump up ^ `` Democratic mayor to challenge GOP 's Rand Paul in Senate race ''. Associated Press. January 27, 2016. Retrieved January 27, 2016. Jump up ^ `` Ron Leach Will Run For U.S. Senate In Kentucky ''. Hillbilly Report. January 14, 2016. Retrieved January 26, 2016. Jump up ^ `` Lexington Mayor Jim Gray running against U.S. Sen. Rand Paul ''. Lexington Herald - Leader. January 27, 2016. Retrieved January 27, 2016. Jump up ^ `` The Latest : Vitter Says Wo n't Run for US Senate in 2016 ''. ABC News. November 21, 2015. Retrieved November 21, 2015. Jump up ^ Berry, Deborah ( November 25, 2015 ). `` Rep. Charles Boustany will run for Senate ''. The Advertiser. Retrieved December 9, 2015. Jump up ^ O'Donoghue, Julia ( December 7, 2015 ). `` Louisiana Congressman John Fleming launches bid for David Vitter 's Senate seat ''. The Times - Picayune. Retrieved December 9, 2015. Jump up ^ Richard Rainey ( December 16, 2015 ). `` Joseph Cao enters Senate race for Vitter 's seat, tells supporters by email ''. The Times - Picayune. Retrieved January 14, 2016. Jump up ^ `` Maness officially joins Senate race ''. WWL AM870. January 29, 2016. Retrieved January 29, 2016. ^ Jump up to : Alford, Jeremy ( December 22, 2015 ). `` More possibilities surface for Louisiana 's US Senate race ''. Greater Baton Rouge Business Report. Retrieved February 4, 2016. Jump up ^ Alford, Jeremy ( December 7, 2015 ). `` Names floating in, out of developing US Senate race ''. Houma Today. Retrieved March 4, 2016. Jump up ^ Tidmore, Christopher ( December 7, 2015 ). `` Young, Cazayoux and Hebert consider Vitter 's U.S. Senate seat ''. The Louisiana Weekly. Retrieved March 4, 2016. Jump up ^ Alford, Jeremy ( March 23, 2016 ). `` New names still hover over Senate race ''. The Independent. Retrieved April 20, 2016. Jump up ^ Crisp, Elizabeth ( February 4, 2016 ). `` Democrat Caroline Fayard launches U.S. Senate bid ''. The Advocate. Retrieved February 5, 2016. Jump up ^ Stickney, Ken ( March 28, 2016 ). `` Pellerin announcement comes April 5 ''. The Daily Advertiser. Retrieved April 20, 2016. Jump up ^ Stickney, Ken ( January 25, 2016 ). `` Pellerin to explore Senate campaign ''. The Daily Advertiser. Retrieved March 4, 2016. Jump up ^ Hilburn, Greg ( January 6, 2016 ). `` Alexandria Mayor, state Rep. Johnson consider Senate run ''. The News - Star. Jump up ^ Ballard, Mark ( December 19, 2015 ). `` Political Horizons : Despite campaign fatigue, a crowded, close Senate race looms ''. The Advocate. Jump up ^ Rainey, Richard ( December 10, 2015 ). `` Louisiana Senate race : who 's in, who 's out in the early going ''. 2015 NOLA Media Group. The Times - Picayune. Retrieved December 16, 2015. Jump up ^ Mettler, Katie ( November 9, 2016 ). `` Republican, Democrat head to runoff in Louisiana Senate race ''. Washington Post. Retrieved November 9, 2016. Jump up ^ Bolton, Alexander ( November 28, 2014 ). `` 2016 retirements could complicate Dems ' comeback plans ''. The Hill. Retrieved December 1, 2014. Jump up ^ `` Edwards jumps into Maryland Senate race ''. Politico. March 10, 2015. Retrieved May 16, 2015. ^ Jump up to : `` Maryland : The State Board of Election, 2016 candidate listing ''. Retrieved February 3, 2016. Jump up ^ Fritze, John ( August 24, 2015 ). `` Richard Douglas first Republican to enter Md. Senate race ''. Baltimore Sun. Jump up ^ `` Openly gay Republican explores bid for Senate seat from Md. ''. May 18, 2015. Retrieved October 29, 2015. Jump up ^ Stinson, Jim ( July 15, 2014 ). `` Akin wo n't rule out 2016 run against Blunt ''. Springfield News - Leader. Retrieved November 13, 2014. Jump up ^ Breitman, Kendall ( February 26, 2015 ). `` Akin : I 'm not running for Senate ''. Politico. Retrieved February 26, 2015. Jump up ^ Rivas, Rebecca ( February 11, 2016 ). `` Black challengers of Democrat incumbents fight with party over access ''. The St. Louis American. Retrieved February 16, 2016. Jump up ^ `` Cori Bush for U.S. Senate ''. Retrieved February 16, 2016. Jump up ^ Sheeley, Andrew ( February 25, 2016 ). `` Wana Dubie officially first US Senate candidate from Salem ''. The Salem News. Retrieved February 27, 2016. Jump up ^ Cillizilla, Chris ( September 19, 2013 ). `` Missouri Gov. Jay Nixon steps forward, but toward what ? ''. The Washington Post. Retrieved April 8, 2014. Jump up ^ `` Missouri Treasurer Zweifel wo n't run for office ''. Kansas City Star. November 18, 2013. Retrieved November 19, 2013. Jump up ^ Hulse, Carl ( March 27, 2015 ). `` Harry Reid Says He Wo n't Seek Re-election ''. The New York Times. Jump up ^ Kudialis, Chris ( March 18, 2016 ). `` Angle to make another bid for Reid 's Senate seat ''. Las Vegas Sun. Retrieved April 20, 2016. Jump up ^ `` Ayotte Faces Primary Challenge From Former GOP State Senator ''. nhpr. March 8, 2016. Retrieved March 9, 2016. Jump up ^ `` Jim Rubens to challenge incumbent Sen. Ayotte in GOP primary ''. New Hampshire Union - Leader. March 5, 2016. Retrieved March 9, 2016. Jump up ^ DiSasto, John ( November 15, 2014 ). `` Analysis : NH Democrats already have deep bench for top races in 2016 ''. NHJournal. Jump up ^ Ed O ' ' eefe and Mike DeBonis ( 2016 - 11 - 16 ). `` Democrats shake up Senate leadership ''. Bostonglobe.com. Retrieved 2017 - 08 - 25. ^ Jump up to : Dicker, Fredric U. ( April 6, 2015 ). `` Top Republican candidates to challenge Chuck Schumer ''. New York Post. Retrieved April 7, 2015. Jump up ^ Johnson, Eliana ( June 24, 2015 ). `` Larry Kudlow and NRSC Renew Discussions on Senate Run ''. National Review. Retrieved June 25, 2015. Jump up ^ Weiner, Mark ( April 7, 2015 ). `` U.S. Rep. Richard Hanna says he wo n't run against Chuck Schumer in 2016 NY senate race ''. Syracuse.com. Retrieved April 7, 2015. ^ Jump up to : `` New York Election Results 2016 ''. Retrieved November 16, 2016. Jump up ^ `` U.S. SENATE RACE : Schumer, Long square off ''. Press & Sun - Bulletin. November 3, 2016. Jump up ^ Cahn, Emily ( December 11, 2013 ). `` Opportunities Now and Later in North Carolina ''. Roll Call. Retrieved December 11, 2013. Jump up ^ `` Sen. Burr confirms he will run in 2016 ''. WNCN. January 6, 2015. Retrieved January 8, 2015. Jump up ^ Colin Campbell ( December 21, 2015 ). `` Republican Greg Brannon challenges Richard Burr in second Senate bid ''. The News & Observer. Retrieved December 31, 2015. Jump up ^ Sarah Krueger ( September 24, 2015 ). `` Larry Holmquist enters Senate race, challenging Richard Burr ''. Retrieved December 1, 2015. Jump up ^ `` Former judge Wright running for Burr 's Senate seat ''. Asheville Citizen - Times. September 11, 2015. Retrieved December 1, 2015. Jump up ^ `` NC SBE Contest Results ''. Retrieved March 18, 2016. Jump up ^ Woolverton, Paul ( September 21, 2015 ). `` Spring Lake Mayor Chris Rey announces run for US Senate ''. Fayetteville Observer. Retrieved September 21, 2015. Jump up ^ Leslie, Laura ( October 15, 2015 ). `` Durham businessman joining Dem field in US Senate race ''. WRAL. Jump up ^ `` Ernest Reeves for U.S. Senate ''. Retrieved December 31, 2015. Jump up ^ Cillizza, Chris ( June 24, 2015 ). `` Democrats ' Senate hopes take a hit with Kay Hagan 's no - go decision ''. The Washington Post. Retrieved June 30, 2015. Jump up ^ Jarvis, Craig ( April 14, 2015 ). `` Cowell seeking third term as NC treasurer ''. The News & Observer. Retrieved April 14, 2015. Jump up ^ Cohen, Kelly ( September 17, 2014 ). `` Foxx wo n't run for Senate in 2016 ''. The Washington Examiner. Retrieved October 2, 2014. Jump up ^ `` NC SBE Contest Results ''. Retrieved March 18, 2016. Jump up ^ Nowatzki, Mike ( April 2, 2016 ). `` ND Democrat Glassheim says he 's healthy and ready to run for US Senate ''. The Forum of Fargo - Moorhead. Forum Communications. Retrieved April 4, 2016. Jump up ^ Torry, Jack ( May 19, 2015 ). `` Portman has conservative primary challenger ''. The Columbus Dispatch. Jump up ^ Johnson, Alan ( January 1, 2016 ). `` Martin O'Malley wo n't appear on Ohio 's primary ballot ''. The Columbus Dispatch. Retrieved January 14, 2016. Jump up ^ Coolidge, Sharon. `` Sittenfeld : Yes, I 'm running for U.S. Senate ''. The Cincinnati Enquirer. Retrieved January 22, 2015. Jump up ^ Wehrman, Jessica ; Torry, Jack ( February 25, 2015 ). `` Ted Strickland says swift GOP attacks in Senate race are a ' compliment ' ''. The Columbus Dispatch. Retrieved March 9, 2015. Jump up ^ Rowland, Darrell ; Ludlow, Randy ( December 16, 2015 ). `` Kasich joins GOP competitors in filing for Ohio primary ''. The Columbus Dispatch. Jump up ^ Vardon, Joe ( May 8, 2013 ). `` Ohio legislator to challenge Portman in ' 16 ''. The Columbus Dispatch. Retrieved September 20, 2013. Jump up ^ `` Who will face Portman in ' 16 ? ''. The Columbus Dispatch. January 2, 2015. Retrieved January 10, 2015. Jump up ^ Taylor, Jessica ( January 17, 2014 ). `` Crowded primary likely in race for Coburn seat ''. The Hill. Retrieved January 17, 2014. Jump up ^ `` U.S. Senate seat goes to Republican James Lankford ''. Roll Call. November 4, 2014. Retrieved November 21, 2014. Jump up ^ Dallas Franklin ; Leslie Rangel ( November 4, 2014 ). `` U.S. Senate seat goes to Republican James Lankford ''. KFOR. Retrieved May 22, 2015. Jump up ^ Mann, Damian ( September 21, 2015 ). `` Medford Councilor Stine to challenge Sen. Ron Wyden ''. Mail Tribune. Retrieved September 21, 2015. ^ Jump up to : `` Who 's running for president, Oregon governor, other seats ? The latest on 2016 candidates ''. The Oregonian. November 17, 2015. Retrieved March 9, 2016. Jump up ^ Hammers, Scott ( February 5, 2016 ). `` Bend businessman Carpenter to run for Senate ''. The Bend Bulletin. Retrieved March 9, 2016. Jump up ^ `` Laschober for U.S. Senate ''. Jump up ^ Dubois, Steven ( November 11, 2015 ). `` Oregon county commissioner Faye Stewart to run for US Senate ''. KATU. Retrieved December 3, 2015. Jump up ^ Stern, Everett ( January 26, 2015 ). `` After serious consideration, I have made the decision to run for the PA United States Senate seat... ''. Facebook. Retrieved April 5, 2015. Jump up ^ Weiner, Rachel. `` Joe Sestak planning Senate campaign ''. The Washington Post. Retrieved October 22, 2013. Jump up ^ Maher, Chris ( September 14, 2015 ). `` Steel Town Mayor John Fetterman Enters Pennsylvania Senate Race ''. WSJ. Jump up ^ `` John fetterman ''. whitehouse.gov. Retrieved July 25, 2016. Jump up ^ `` Joseph Vodvarka for US Senate 2016 ''. Montco Area 4 Democrats. December 28, 2015. Retrieved February 18, 2016. Jump up ^ Tamari, Jonathan ; Roebuck, Jeremy ( July 6, 2015 ). `` Pawlowski halts Senate bid, Democrats seek options ''. The Philadelphia Inquirer. Retrieved July 8, 2015. Jump up ^ Zeleny, Jeff ( December 17, 2012 ). `` Rep. Tim Scott Chosen to Replace Jim DeMint as South Carolina Senator ''. The New York Times. ^ Jump up to : Livingston, Abby ( February 12, 2014 ). `` South Carolina Republicans Will Have to Ride the Bench ''. Roll Call. Retrieved April 2, 2014. Jump up ^ Cillizza, Chris ( December 17, 2012 ). `` Tim Scott and the changing face of the Republican party ''. The Washington Post. Retrieved April 2, 2014. Jump up ^ Jaffe, Greg ( May 28, 2013 ). `` As budget cuts hit S.C., a congressman is surprised at constituents ' reactions ''. The Washington Post. Jump up ^ Lawrence, Tom ( July 1, 2015 ). `` Will anyone take on Thune in 2016 ? ''. Prairie Perspective. Retrieved August 27, 2015. Jump up ^ Woster, Kevin ( August 24, 2015 ). `` Hurst for U.S. Senate in 2016 ? Well... ''. KELO - TV. Retrieved August 27, 2015. Jump up ^ Tupper, Seth ( December 14, 2015 ). `` Thune frolicking through another opponent-less election season ''. Rapid City Journal. Retrieved February 20, 2016. Jump up ^ `` Rick Weiland returns with new nonpartisan political group ''. Rapid City Journal. March 18, 2015. Retrieved May 20, 2015. Jump up ^ Gehrke, Robert ( October 10, 2013 ). `` Most Utahns disapprove of Sen. Mike Lee, want him to compromise ''. Salt Lake Tribune. Archived from the original on October 10, 2013. Retrieved November 8, 2014. Jump up ^ Rucker, Philip ( October 22, 2013 ). `` In Utah, tea party favorite Sen. Lee faces GOP backlash over government shutdown ''. The Washington Post. Retrieved November 8, 2014. Jump up ^ Livingston, Abby ( April 2, 2014 ). `` Next Utah Races to Watch Are for Senate ''. Roll Call. Retrieved April 3, 2014. Jump up ^ Canham, Matt ( April 12, 2015 ). `` Mike Lee could be a lock for re-election to the Senate ''. The Salt Lake Tribune. Retrieved February 4, 2016. Jump up ^ Roche, Lisa Riley ( April 21, 2015 ). `` Josh Romney : I wo n't run against Sen. Mike Lee, but another Republican should ''. Deseret News. Jump up ^ Price, Michelle ( April 23, 2016 ). `` Utah Gov. Herbert fails to secure nomination at convention ''. SunHerald. Retrieved April 27, 2016. Jump up ^ Canham, Matt ( August 17, 2015 ). `` Sen. Mike Lee 's first challenger is marriage therapist Jonathan Swinton, an untested Democrat ''. The Salt Lake Tribune. Jump up ^ Nelson, Louis ( June 2016 ). `` Two transgender candidates named ' Misty ' win primaries ''. Politico.com. Retrieved June 29, 2016. Jump up ^ Heintz, Paul ( October 5, 2015 ). `` Scott Milne Considers Challenging Patrick Leahy ''. Seven Days. Jump up ^ Gram, Dave ( May 26, 2016 ). `` Milne hopes to unseat Sen. Leahy ''. The Burlington Free Press. Retrieved May 27, 2016. Jump up ^ Joseph, Cameron ( August 9, 2013 ). `` Rep. Reichert ' thinking about ' run for Senate, governor in Washington ''. The Hill. Retrieved April 7, 2014. Jump up ^ Brunner, Jim ( October 16, 2015 ). `` Dave Reichert wo n't run against Jay Inslee for governor ''. The Seattle Times. Retrieved November 1, 2015. Jump up ^ `` DSCC Announces Endorsement Of Russ Feingold In Wisconsin Senate Race ''. May 14, 2015. Jump up ^ `` Mary Burke says she wo n't run for statewide office again ''. Wisconsin State Journal. November 10, 2014. Retrieved November 10, 2014. 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Question: how many republicans and how many democrats are in the senate
Answer: 54