United States Senate elections, 2018 - wikipedia United States Senate elections, 2018 United States Senate elections, 2018 ← 2016 November 6, 2018 2020 → Class 1 ( 33 of the 100 ) seats in the United States Senate ( and 2 special elections ) 51 seats needed for a majority Leader Mitch McConnell Chuck Schumer Party Republican Democratic Leader since January 3, 2007 January 3, 2017 Leader 's seat Kentucky New York Current seats 51 47 Seats needed Seats up 9 24 Party Independent Current seats Seats up Seats up for election ( general & special ) : Democratic incumbent running Democratic incumbent retiring Republican incumbent running Republican incumbent retiring Independent incumbent running Independent incumbent retiring No election Inset rectangle signifies a special election. Incumbent Majority Leader Mitch McConnell Republican Elections to the United States Senate will be held November 6, 2018, with 33 of the 100 seats in the Senate being contested in regular elections and two seats being contested in special elections. The winners will serve six - year terms from January 3, 2019, to January 3, 2025. Currently, Democrats have 24 seats up for election, as well as the seats of two independents who caucus with them. Republicans have nine seats up for election. The seats up for regular election in 2018 were last up for election in 2012 ; in addition, special elections will be scheduled if vacancies occur, as has already happened in Minnesota and Mississippi. After the 2016 elections, some state election officials are trying to upgrade voting systems in time for this election. The U.S. House of Representatives elections, 39 gubernatorial elections, and many other state and local elections will also be held on this date. Republicans can only afford to lose one Senate seat and still have a working majority with the Vice President breaking the tie in their favor. Four of the Republican seats are open as a result of retirements in Tennessee, Utah, Arizona, and Mississippi. Democrats are defending ten seats in states won by Donald Trump in the 2016 presidential election, while Republicans are only defending one seat in a state won by Hillary Clinton in 2016. Contents 1 Focus on competitive races 2 Partisan composition 3 Change in composition 3.1 Before the elections 3.2 After the elections 4 Most recent election predictions 5 Election dates 6 Race summary 6.1 Special elections during the preceding Congress 6.2 Elections leading to the next Congress 7 Arizona 8 California 9 Connecticut 10 Delaware 11 Florida 12 Hawaii 13 Indiana 14 Maine 15 Maryland 16 Massachusetts 17 Michigan 18 Minnesota 19 Minnesota ( Special ) 20 Mississippi 21 Mississippi ( Special ) 22 Missouri 23 Montana 24 Nebraska 25 Nevada 26 New Jersey 27 New Mexico 28 New York 29 North Dakota 30 Ohio 31 Pennsylvania 32 Rhode Island 33 Tennessee 34 Texas 35 Utah 36 Vermont 37 Virginia 38 Washington 39 West Virginia 40 Wisconsin 41 Wyoming 42 See also 43 Notes 44 References Focus on competitive races Democrats are expected to target the Republican - held Senate seats in Arizona ( open seat ) and Nevada. Democrats could also target seats in Texas, Mississippi ( At least one of the two seats ) and Tennessee 's open - seat. Republicans are expected to target Democratic - held seats in Indiana, Missouri, Montana, North Dakota, and West Virginia, all of which voted for Mitt Romney in the 2012 presidential election and Donald Trump in the 2016 presidential election, as well as seats in Florida, Ohio, Pennsylvania, Wisconsin, and Michigan, all of which voted for Donald Trump in the 2016 election. Republicans could also target seats in Minnesota ( at least one of the two seats ), Virginia, Maine, and New Jersey. Other races may also become competitive. Partisan composition Among the 33 Class 1 Senate seats up for regular election in 2018 are 23 currently held by Democrats, two by independents who caucus with the Senate Democrats, and eight by Republicans. The Class 2 seats in Minnesota and Mississippi held by interim appointees are also up for election. Parties Total Democratic Republican Independent Last election ( 2016 ) 46 52 100 Before this election 47 51 100 Not up 23 42 0 65 Class 2 ( 2014 → 2020 ) 11 20 0 31 Class 3 ( 2016 → 2022 ) 12 22 0 34 Up 24 9 35 Class 1 ( 2012 → 2018 ) 23 8 33 Special : Class 2 0 Incumbent retiring 0 0 Incumbent running 24 6 32 Change in composition Before the elections Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Running Retiring Majority → Retiring Running Running Running Running Running Running Retiring After the elections TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD Majority → TBD TBD TBD TBD TBD TBD TBD TBD Key : D Democratic Republican Independent, caucusing with Democrats Most recent election predictions Most election predictors use : `` tossup '' : no advantage `` tilt '' ( used sometimes ) : advantage that is not quite as strong as `` lean '' `` lean '' : slight advantage `` likely '' or `` favored '' : significant, but surmountable, advantage `` safe '' or `` solid '' : near - certain chance of victory. State PVI Incumbent Most recent result Cook Apr 9, 2018 I.E. Apr 20, 2018 Sabato May 30, 2018 NYT May 25, 2018 CNN Apr 9, 2018 RCP Apr 18, 2018 Arizona R + 5 Jeff Flake ( R ) ( Retiring ) 49 % R Tossup Tossup Tossup Tossup Tossup Tossup California D + 12 Dianne Feinstein ( D ) 63 % D Safe D Safe D Safe D Safe D Safe D Safe D Connecticut D + 6 Chris Murphy ( D ) 55 % D Safe D Safe D Safe D Safe D Safe D Safe D Delaware D + 6 Tom Carper ( D ) 66 % D Safe D Safe D Safe D Safe D Safe D Safe D Florida R + 2 Bill Nelson ( D ) 55 % D Tossup Tossup Tossup Tossup Tossup Tossup Hawaii D + 18 Mazie Hirono ( D ) 63 % D Safe D Safe D Safe D Safe D Safe D Safe D Indiana R + 9 Joe Donnelly ( D ) 50 % D Tossup Tossup Tossup Tossup Tossup Tossup Maine D + 3 Angus King ( I ) 53 % I Safe D / I Safe D / I Safe D / I Safe D / I Likely D / I Safe D / I Maryland D + 12 Ben Cardin ( D ) 55 % D Safe D Safe D Safe D Safe D Safe D Safe D Massachusetts D + 12 Elizabeth Warren ( D ) 54 % D Safe D Safe D Safe D Safe D Safe D Safe D Michigan D + 1 Debbie Stabenow ( D ) 59 % D Likely D Safe D Likely D Likely D Likely D Likely D Minnesota D + 1 Amy Klobuchar ( D ) 65 % D Safe D Safe D Safe D Safe D Safe D Safe D Minnesota ( Special ) D + 1 Tina Smith ( D ) 53 % D Lean D Likely D Likely D Likely D Likely D Likely D Mississippi R + 9 Roger Wicker ( R ) 57 % R Safe R Safe R Safe R Safe R Safe R Safe R Mississippi ( Special ) R + 9 Cindy Hyde - Smith ( R ) 60 % R Likely R Safe R Likely R Likely R Safe R Likely R Missouri R + 9 Claire McCaskill ( D ) 55 % D Tossup Tossup Tossup Tossup Tossup Tossup Montana R + 11 Jon Tester ( D ) 49 % D Likely D Tilt D Lean D Lean D Lean D Lean D Nebraska R + 14 Deb Fischer ( R ) 56 % R Likely R Safe R Safe R Safe R Safe R Safe R Nevada D + 1 Dean Heller ( R ) 46 % R Tossup Tossup Tossup Tossup Tossup Tossup New Jersey D + 7 Bob Menendez ( D ) 59 % D Likely D Safe D Likely D Likely D Safe D Likely D New Mexico D + 3 Martin Heinrich ( D ) 51 % D Safe D Safe D Safe D Safe D Safe D Safe D New York D + 11 Kirsten Gillibrand ( D ) 72 % D Safe D Safe D Safe D Safe D Safe D Safe D North Dakota R + 16 Heidi Heitkamp ( D ) 50 % D Tossup Tossup Tossup Tossup Tossup Tossup Ohio R + 3 Sherrod Brown ( D ) 51 % D Lean D Lean D Lean D Lean D Lean D Lean D Pennsylvania EVEN Bob Casey Jr. ( D ) 54 % D Likely D Likely D Likely D Likely D Likely D Likely D Rhode Island D + 10 Sheldon Whitehouse ( D ) 64 % D Safe D Safe D Safe D Safe D Safe D Safe D Tennessee R + 14 Bob Corker ( R ) ( Retiring ) 65 % R Tossup Lean R Lean R Lean R Lean R Tossup Texas R + 8 Ted Cruz ( R ) 57 % R Likely R Likely R Likely R Likely R Likely R Lean R Utah R + 20 Orrin Hatch ( R ) ( Retiring ) 65 % R Safe R Safe R Safe R Safe R Safe R Safe R Vermont D + 15 Bernie Sanders ( I ) 71 % I Safe D / I Safe D / I Safe D / I Safe D / I Safe D / I Safe D / I Virginia D + 1 Tim Kaine ( D ) 53 % D Safe D Safe D Safe D Safe D Likely D Likely D Washington D + 7 Maria Cantwell ( D ) 61 % D Safe D Safe D Safe D Safe D Safe D Safe D West Virginia R + 20 Joe Manchin ( D ) 61 % D Tossup Tossup Tossup Tossup Tossup Tossup Wisconsin EVEN Tammy Baldwin ( D ) 51 % D Likely D Tilt D Lean D Lean D Lean D Likely D Wyoming R + 25 John Barrasso ( R ) 76 % R Safe R Safe R Safe R Safe R Safe R Safe R Election dates For the regularly scheduled general elections. Shading added for future events. State Filing deadline Primary election Primary runoff ( if necessary ) General election Poll closing ( Eastern Time ) Arizona May 30, 2018 August 28, 2018 N / A November 6, 2018 9pm California March 9, 2018 June 5, 2018 N / A November 6, 2018 11pm Connecticut June 12, 2018 August 14, 2018 N / A November 6, 2018 8pm Delaware July 10, 2018 September 6, 2018 N / A November 6, 2018 8pm Florida May 4, 2018 August 28, 2018 N / A November 6, 2018 7pm & 8pm Hawaii June 5, 2018 August 11, 2018 N / A November 6, 2018 11pm Indiana February 9, 2018 May 8, 2018 N / A November 6, 2018 6pm & 7pm Maine March 15, 2018 June 12, 2018 N / A November 6, 2018 8pm Maryland February 27, 2018 June 26, 2018 N / A November 6, 2018 8pm Massachusetts June 5, 2018 September 4, 2018 N / A November 6, 2018 8pm Michigan April 24, 2018 August 7, 2018 N / A November 6, 2018 8pm & 9pm Minnesota June 5, 2018 August 14, 2018 N / A November 6, 2018 9pm Mississippi March 1, 2018 June 5, 2018 June 26, 2018 November 6, 2018 8pm Mississippi ( Special ) March 26, 2018 November 6, 2018 N / A November 27, 2018 8pm Missouri March 27, 2018 August 7, 2018 N / A November 6, 2018 8pm Montana March 12, 2018 June 5, 2018 N / A November 6, 2018 10pm Nebraska March 1, 2018 May 15, 2018 N / A November 6, 2018 9pm Nevada March 16, 2018 June 12, 2018 N / A November 6, 2018 10pm New Jersey April 2, 2018 June 5, 2018 N / A November 6, 2018 8pm New Mexico March 13, 2018 June 5, 2018 N / A November 6, 2018 9pm New York April 12, 2018 June 26, 2018 N / A November 6, 2018 9pm North Dakota April 9, 2018 June 12, 2018 N / A November 6, 2018 10pm & 11pm Ohio February 7, 2018 May 8, 2018 N / A November 6, 2018 7 : 30pm Pennsylvania March 20, 2018 May 15, 2018 N / A November 6, 2018 8pm Rhode Island June 27, 2018 September 12, 2018 N / A November 6, 2018 8pm Tennessee April 5, 2018 August 2, 2018 N / A November 6, 2018 8pm Texas December 11, 2017 March 6, 2018 May 22, 2018 ( Unnecessary ) November 6, 2018 8pm & 9pm Utah March 15, 2018 June 26, 2018 N / A November 6, 2018 10pm Vermont May 31, 2018 August 14, 2018 N / A November 6, 2018 7pm Virginia March 29, 2018 June 12, 2018 N / A November 6, 2018 7pm Washington May 18, 2018 August 7, 2018 N / A November 6, 2018 11pm West Virginia January 27, 2018 May 8, 2018 N / A November 6, 2018 7 : 30pm Wisconsin June 1, 2018 August 14, 2018 N / A November 6, 2018 9pm Wyoming June 1, 2018 August 21, 2018 N / A November 6, 2018 9pm Race summary Special elections during the preceding Congress In these special elections, the winners will be elected coincidingly with the other races of the 2018 Senate elections, but will be seated before January 3, 2019. Ordered by election date, then by state, then by class. State ( linked to summaries below ) Incumbent Results Candidates Senator Party Electoral history Minnesota ( Class 2 ) Tina Smith Democratic 2018 ( Appointed ) Special election scheduled for November 6, 2018. Interim appointee running. Bob Anderson ( Republican ) Karin Housley ( Republican ) Nick Leonard ( Democratic ) Richard Painter ( Democratic ) Tina Smith ( Democratic ) Mississippi ( Class 2 ) Cindy Hyde - Smith Republican 2018 ( Appointed ) Special election scheduled for November 6, 2018. If no candidate receives a majority, a runoff will be held on November 27, 2018. Interim appointee running. Tobey Bartee ( Democratic ) Mike Espy ( Democratic ) Cindy Hyde - Smith ( Republican ) Chris McDaniel ( Republican ) Elections leading to the next Congress In these general elections, the winners will be elected for the term beginning January 3, 2019. All of the elections involve the Class 1 seats ; ordered by state. State ( linked to summaries below ) Incumbent Results Candidates Senator Party Electoral history Arizona Jeff Flake Republican 2012 Incumbent retiring. New senator to be elected. Deedra Abboud ( Democratic ) Eve Reyes Aguirre ( Green ) Joe Arpaio ( Republican ) Bob Bishop ( Democratic ) Craig Brittain ( Republican ) Christian `` C.J. '' Diegel ( Republican ) Michelle Griffin ( Republican ) Matt Jette ( Democratic ) Doug Marks ( Libertarian ) Martha McSally ( Republican ) Shawn Redd ( Republican ) David Alan Ruben ( Democratic ) Chris Russell ( Democratic ) Richard Sherzan ( Democratic ) Kyrsten Sinema ( Democratic ) Nicolas Tutora ( Republican ) Kelli Ward ( Republican ) California Dianne Feinstein Democratic 1992 ( Special ) 1994 2000 2006 2012 Incumbent running. Arun Bhumitra ( Republican ) James Bradley ( Republican ) Jack Crew ( Republican ) Erin Cruz ( Republican ) Rocky De La Fuente ( Republican ) Kevin de León ( Democratic ) Adrienne Edwards ( Democratic ) Dianne Feinstein ( Democratic ) Colleen Fernald ( No party preference ) Rash Ghosh ( No party preference ) Tim Gildersleeve ( No party preference ) Michael Girgis ( No party preference ) Don Grundmann ( No party preference ) Jason Hanania ( No party preference ) Pat Harris ( Democratic ) Alison Hartson ( Democratic ) David Hildebrand ( Democratic ) Jerry Laws ( Republican ) Patrick Little ( Republican ) David Moore ( No party preference ) Kevin Mottus ( Republican ) Mario Nabliba ( Republican ) Lee Olson ( No party preference ) Tom Palzer ( Republican ) John Parker ( Peace and Freedom ) Herbert Peters ( Democratic ) Douglas Pierce ( Democratic ) Gerald Plummer ( Democratic ) Seelam Prabhakar Reddy ( Write - in ) Derrick Reid ( Libertarian ) Ursula M. Schilling ( Write - in ) Ling Ling Shi ( No party preference ) Paul Taylor ( Republican ) Donnie Turner ( Democratic ) Michael V. Ziesing ( Write - in ) Connecticut Chris Murphy Democratic 2012 Incumbent running. Ann - Marie Adams ( Democratic ) Matthew Corey ( Republican ) Chris Murphy ( Democratic ) Dominic Rapini ( Republican ) Delaware Tom Carper Democratic 2000 2006 2012 Incumbent running. Robert Arlett ( Republican ) Tom Carper ( Democratic ) Kerri Evelyn Harris ( Democratic ) Gene Truono ( Republican ) Florida Bill Nelson Democratic 2000 2006 2012 Incumbent running. Rocky De La Fuente ( Republican ) Lateresa Ann Jones ( Write - in ) Howard Knepper ( Write - in ) Michael Levinson ( Write - in ) Bill Nelson ( Democratic ) Rick Scott ( Republican ) Charles Frederick Tolbert ( Write - in ) David Weeks ( Write - in ) Hawaii Mazie Hirono Democratic 2012 Incumbent running. Mazie Hirono ( Democratic ) Thomas Edward White ( Republican ) Indiana Joe Donnelly Democratic 2012 Incumbent renominated. Mike Braun ( Republican ) Joe Donnelly ( Democratic ) James Johnson ( Independent ) Maine Angus King Independent 2012 Incumbent running. Eric Brakey ( Republican ) Angus King ( Independent ) Max Linn ( Republican ) Zak Ringelstein ( Democratic ) Maryland Ben Cardin Democratic 2006 2012 Incumbent running. Tony Campbell ( Republican ) Ben Cardin ( Democratic ) Chris Chaffee ( Republican ) Evan Cronhardt ( Republican ) Nnabu Eze ( Republican ) John Graziani ( Republican ) Christina Grigorian ( Republican ) Albert Howard ( Republican ) Erik Jetmir ( Democratic ) Bill Krehnbrink ( Republican ) Chelsea Manning ( Democratic ) Marcia Morgan ( Democratic ) Jerry Segal ( Democratic ) Neal Simon ( Independent ) Edward Shlikas ( Independent ) Gerald Smith ( Republican ) Blaine Taylor ( Republican ) Brian Charles Vaeth ( Republican ) Rikki Vaughn ( Democratic ) Arvin Vohra ( Libertarian ) Rica Wilson ( Democratic ) Lih Young ( Democratic ) Massachusetts Elizabeth Warren Democratic 2012 Incumbent running. Shiva Ayyadurai ( Independent ) Geoff Diehl ( Republican ) James Devine ( Independent ) Joshua Ford ( Independent ) John Kingston ( Republican ) Beth Lindstrom ( Republican ) Darius Mitchell ( Republican ) Elizabeth Warren ( Democratic ) Allen Waters ( Republican ) Heidi Wellman ( Republican ) Michigan Debbie Stabenow Democratic 2000 2006 2012 Incumbent running. John James ( Republican ) Sandy Pensler ( Republican ) Marcia Squier ( Independent ) Debbie Stabenow ( Democratic ) Minnesota Amy Klobuchar Democratic 2006 2012 Incumbent running. Robert Bamheiser ( Republican ) Amy Klobuchar ( Democratic ) Jim Newberger ( Republican ) Paula Overby ( Green ) Jack Shepard ( Republican ) Mississippi Roger Wicker Republican 2007 ( Appointed ) 2008 ( Special ) 2012 Incumbent running. David Baria ( Democratic ) Danny Bedwell ( Libertarian ) Jensen Bohren ( Democratic ) Richard Boyanton ( Republican ) Jerone Garland ( Democratic ) Victor Maurice, Jr. ( Democratic ) Shawn O'Hara ( Reform ) Omeria Scott ( Democratic ) Howard Sherman ( Democratic ) Roger Wicker ( Republican ) Missouri Claire McCaskill Democratic 2006 2012 Incumbent running. Jerome Bauer ( Green ) Japheth Campbell ( Libertarian ) Jo Crain ( Green ) Angelica Earl ( Democratic ) David Faust ( Democratic ) Travis Gonzalez ( Democratic ) Brian Hagg ( Republican ) Josh Hawley ( Republican ) John Hogan ( Democratic ) Bradley Krembs ( Republican ) Claire McCaskill ( Democratic ) Tony Monetti ( Republican ) Kristi Nichols ( Republican ) Ken Patterson ( Republican ) Austin Petersen ( Republican ) Peter Pfeifer ( Republican ) Fred Ryman ( Republican ) Christina Smith ( Republican ) Courtland Sykes ( Republican ) Leonard Steinman ( Democratic ) Carla Wright ( Democratic ) Montana Jon Tester Democratic 2006 2012 Incumbent running. Timothy Adams ( Green ) Rick Breckenridge ( Libertarian ) Troy Downing ( Republican ) Steve Kelly ( Green ) Russell Fagg ( Republican ) Albert Olszewski ( Republican ) Matthew Rosendale ( Republican ) Jon Tester ( Democratic ) Nebraska Deb Fischer Republican 2012 Incumbent renominated. Deb Fischer ( Republican ) Jane Raybould ( Democratic ) Jim Schultz ( Libertarian ) Nevada Dean Heller Republican 2011 ( Appointed ) 2012 Incumbent running. Kamau Bakari ( Independent American ) Sherry Brooks ( Republican ) Danny Burleigh ( Democratic ) Sarah Gazala ( Republican ) Tim Hagan ( Libertarian ) Vic Harrell ( Republican ) Tom Heck ( Republican ) Dean Heller ( Republican ) David Knight ( Democratic ) Barry Michaels ( Independent ) Allen Rheinhart ( Democratic ) Jacky Rosen ( Democratic ) Jesse Sbaih ( Democratic ) New Jersey Bob Menendez Democratic 2006 ( Appointed ) 2006 2012 Incumbent running. Brian Goldberg ( Republican ) Bob Hugin ( Republican ) Lisa McCormick ( Democratic ) Bob Menendez ( Democratic ) New Mexico Martin Heinrich Democratic 2012 Incumbent running. Aubrey Dunn Jr. ( Libertarian ) Martin Heinrich ( Democratic ) Mick Rich ( Republican ) New York Kirsten Gillibrand Democratic 2009 ( Appointed ) 2010 ( Special ) 2012 Incumbent running. Chele Chiavacci Farley ( Republican ) Kirsten Gillibrand ( Democratic ) Scott Noren ( Democratic ) North Dakota Heidi Heitkamp Democratic 2012 Incumbent running. Kevin Cramer ( Republican ) Heidi Heitkamp ( Democratic ) Thomas O'Neill ( Republican ) Ohio Sherrod Brown Democratic 2006 2012 Incumbent renominated. Sherrod Brown ( Democratic ) Philena Irene Farley ( Green, write - in ) Jim Renacci ( Republican ) Pennsylvania Bob Casey Jr. Democratic 2006 2012 Incumbent renominated. Lou Barletta ( Republican ) Bob Casey Jr. ( Democratic ) Rhode Island Sheldon Whitehouse Democratic 2006 2012 Incumbent running. Robert Flanders ( Republican ) Robert Nardolillo ( Republican ) Sheldon Whitehouse ( Democratic ) Tennessee Bob Corker Republican 2006 2012 Incumbent retiring. New senator to be elected. David Anderson ( Republican ) Trudy Austin ( Independent ) Phil Bredesen ( Democratic ) Marsha Blackburn ( Republican ) John Carico ( Independent ) Larry Crim ( Republican ) Gary Davis ( Democratic ) `` Mr. Jim '' Elkins ( Republican ) Tommy Hay ( Republican ) Terri Honeycutt ( Republican ) Dean Hill ( Independent ) J. Darrell Lynn ( Republican ) Kevin McCants ( Independent ) Aaron Pettigrew ( Republican ) Breton Philips ( Independent ) Kris Todd ( Independent ) Rolando Toyos ( Republican ) John Wolfe ( Democratic ) Texas Ted Cruz Republican 2012 Incumbent renominated. Carl Bible ( Independent ) Ted Cruz ( Republican ) Neal Dikeman ( Libertarian ) Bob McNeil ( Independent ) Beto O'Rourke ( Democratic ) Utah Orrin Hatch Republican 1976 1982 1988 1994 2000 2006 2012 Incumbent retiring. New senator to be elected. Tim Aalders ( Constitution ) Craig Bowden ( Libertarian ) Jeff Dranfield ( Democratic ) Ryan Daniel Jackson ( Write - in ) Mike Kennedy ( Republican ) Abe Korb ( Write - in ) Joshua Lee ( Republican ) Larry Livingston ( Democratic ) Reed McCandless ( Independent American ) Caleb Dan Reeve ( Write - in ) Mitt Romney ( Republican ) Mitchell Vice ( Democratic ) Jenny Wilson ( Democratic ) Vermont Bernie Sanders Independent 2006 2012 Incumbent running. Folasade Adeluola ( Democratic ) Jasdeep Pannu ( Republican ) Bernie Sanders ( Democratic ) Virginia Tim Kaine Democratic 2012 Incumbent running. Nicholas Freitas ( Republican ) E.W. Jackson ( Republican ) Tim Kaine ( Democratic ) Corey Stewart ( Republican ) Matt Waters ( Libertarian ) Washington Maria Cantwell Democratic 2000 2006 2012 Incumbent running. Thor Amundson ( Independent ) Dave Bryant ( Republican ) Jon Butler ( Independent ) Maria Cantwell ( Democratic ) Brad Chase ( FDFR ) Art Coday ( Republican ) Jimmie Deal ( Green ) Rocky De La Fuente ( Republican ) Jennifer Ferguson ( Democratic ) Joey Gibson ( Republican ) Matt Hawkins ( Republican ) Matthew Heines ( Republican ) Steve Hoffman ( FreedomSocialist ) Susan Hutchison ( Republican ) Charlie Jackson ( Independent ) George Kalberer ( Democratic ) Mike Luke ( Libertarian ) John Orlinski ( Republican ) Tim Owen ( Republican ) Don Rivers ( Democratic ) Mohammad Said ( Democratic ) RC Smith ( Republican ) Glen Stockwell ( Republican ) Dave Strider ( Independent ) Keith Swank ( Republican ) Clint Tannehill ( Democratic ) Alex Tsimerman ( StandupAmerica ) Sam Wright ( The Human Rights ) West Virginia Joe Manchin Democratic 2010 ( Special ) 2012 Incumbent renominated. Joe Manchin ( Democratic ) Patrick Morrisey ( Republican ) Wisconsin Tammy Baldwin Democratic 2012 Incumbent running. Tammy Baldwin ( Democratic ) Charles Barman ( Republican ) Scott Harbach ( Republican ) George Lucia ( Repblican ) Griffin Jones ( Republican ) Jeff Mather ( Republican ) Kevin Nicholson ( Republican ) John Schiess ( Independent ) Joseph Schnering ( Veteran 's Party ) Leah Vukmir ( Republican ) Mary Jo Walters ( Independent ) Wyoming John Barrasso Republican 2007 ( Appointed ) 2008 ( Special ) 2012 Incumbent running. John Barrasso ( Republican ) Dave Dodson ( Independent ) Charlie Hardy ( Republican ) John Holtz ( Republican ) Anthony Risseghem ( Republican ) Gary Trauner ( Democratic ) Arizona Main article : United States Senate election in Arizona, 2018 See also : List of United States Senators from Arizona One - term Republican Jeff Flake was elected with 49 % of the vote in 2012. He will be 55 years old in 2018. He has declared he will retire at the end of his term. In 2016, Republican John McCain was re-elected to a sixth term in the Senate. However, Senator McCain has been diagnosed with an aggressive brain tumor. If Senator McCain 's seat becomes vacant, Arizona law requires that the vacancy be filled at the next general election. If this were to occur in 2018, then both Senate seats in Arizona would be up for election simultaneously. U.S. Representative Martha McSally, former state senator Kelli Ward, owner, co-founder of IsAnybodyDown ? Craig Brittain, Christian `` C.J. '' Diegel, pharmacist Nicolas Tutora, former Maricopa County Sheriff Joe Arpaio, and Michelle Griffin will contest the Republican primary. U.S. Rep. Kyrsten Sinema, Deedra Abboud, airshow pilot Bob Bishop, Chris Russell, and former Member of the Iowa House of Representatives Richard Sherzan are running for the Democratic nomination. Eve Reyes Aguirre is running as a Green Party Candidate. California Main article : United States Senate election in California, 2018 See also : List of United States Senators from California Four - term Democrat Dianne Feinstein won a special election in 1992 and was elected to full terms in 1994, 2000, 2006, and 2012. She will be 85 years old in 2018. She is running for re-election. Democratic candidates aside from Feinstein include President pro tempore of the California State Senate Kevin de León, community advocate Adrienne Nicole Edwards, Eugene Patterson Harris, David Hildebrand, Douglas Howard Pierce, and Alison Hartson. Republican candidates include Paul Allen Taylor. Derrick Michael Reid is running with the Libertarian Party. Independent candidates include biologist Tim Gildersleeve, Lee W. Olson, and evangelist Ling Ling Shi. Connecticut Main article : United States Senate election in Connecticut, 2018 See also : List of United States Senators from Connecticut One - term Democrat Chris Murphy was elected with 55 % of the vote in 2012. He will be 45 years old in 2018. He is running for re-election. He is being challenged for the Democratic nomination by Ann - Marie Adams. Businessmen Matthew Corey and Dominic Rapini are seeking the Republican nomination. Delaware Main article : United States Senate election in Delaware, 2018 See also : List of United States Senators from Delaware Three - term Democrat Tom Carper won re-election with 66 % of the vote in 2012. He will be 71 years old in 2018. He announced he was running for re-election during an interview on MSNBC on July 24, 2017. He will be challenged by Kerri Evelyn Harris for the Democratic nomination. Sussex County Councilman Robert Arlett and Businessman Gene Truono are running for the Republican nomination. Florida Main article : United States Senate election in Florida, 2018 See also : List of United States Senators from Florida Three - term Democrat Bill Nelson was re-elected with 55 % of the vote in 2012. Nelson will be 76 years old in 2018. He will seek re-election to a fourth term in office. He is being challenged for the Democratic nomination by Tamika Lyles. Florida Governor Rick Scott has announced his candidacy for the Republican nomination. Scott will be 65 years old in 2018. First elected in 2010 and re-elected in 2014, Scott 's term as Governor of Florida is set to end by January 2019, due to term limits. Lateresa Ann Jones, Howard Knepper, and Joe Smith, are also running for the Republican nomination. Edward Janowski is running as independents. Hawaii Main article : United States Senate election in Hawaii, 2018 See also : List of United States Senators from Hawaii One - term Democrat Mazie Hirono was elected with 63 % of the vote in 2012. She will be 71 years old in 2018. Republican Thomas Edward White is running. Indiana Indiana election ← 2012 2024 → Nominee Joe Donnelly Mike Braun Party Democratic Republican Incumbent U.S. Senator Joe Donnelly Democratic Main article : United States Senate election in Indiana, 2018 See also : List of United States Senators from Indiana One - term Democrat Joe Donnelly was elected with 50.04 % of the vote in 2012. He will be 63 years old in 2018. He is running. He won the Democratic primary unopposed. State Representative Mike Braun won the May 8 Republican primary. Congressmen Luke Messer and Todd Rokita also ran for the Republican nomination. James Johnson is running as an independent. Maine Main article : United States Senate election in Maine, 2018 See also : List of United States Senators from Maine One - term Independent Senator Angus King was elected in a three - way race with 53 % of the vote in 2012. King has caucused with the Democratic Party since taking office in 2013, but he has left open the possibility of caucusing with the Republican Party in the future. King has indicated he will seek re-election. He will be 74 years old in 2018. State Senator Eric Brakey is running for the Republican nomination. Public school teacher and founder of UClass Zak Ringelstein is seeking the Democratic nomination. Maryland Main article : United States Senate election in Maryland, 2018 See also : List of United States Senators from Maryland Two - term Democrat Ben Cardin was re-elected with 56 % of the vote in 2012. He will be 75 years old in 2018. He is running, He is being challenged in the Democratic primary by Chelsea Manning, Marcia Morgan, Jerry Segal, Richard `` Rikki '' Vaughn, Debbie `` Rica '' Wilson, and Lih Young. Tony Campbell, Evan Cronhardt, Nnabu Eze, Gerald Smith, and Blaine Taylor are seeking the Republican nomination. Arvin Vohra, vice chairman of the Libertarian National Committee, is seeking the Libertarian Party nomination. Independents Neal Simon and Edward Shlikas are running. Massachusetts Main article : United States Senate election in Massachusetts, 2018 See also : List of United States Senators from Massachusetts One - term Democrat Elizabeth Warren was elected with 54 % of the vote in 2012. She will be 69 years old in 2018. She is running. State Representative Geoff Diehl, attorney and founder of Better for America, John Kingston, former Romney aide Beth Lindstrom, Darius Mitchell, Allen Waters, and Heidi Wellman are running for the Republican nomination. Shiva Ayyadurai is running as an independent. Shiva started as in early 2017 as the first Republican in the race but went independent in late 2017. Michigan Main article : United States Senate election in Michigan, 2018 See also : List of United States Senators from Michigan Three - term Democrat Debbie Stabenow was re-elected with 59 % of the vote in 2012. When she runs in 2018 she will be 68 years old. She is the only Democrat from the state of Michigan running for Senate. On the Republican side, businessman John James, and businessman Sandy Pensler are running. Independent candidate Marcia Squier is also running. Marcia Squier ran as a Green Party candidate for District 14 of the U.S. House of Representatives in 2016. Minnesota Main article : United States Senate election in Minnesota, 2018 See also : List of United States Senators from Minnesota and United States Senate special election in Minnesota, 2018 Two - term Democrat Amy Klobuchar was re-elected with 65 % of the vote in 2012. She will be 58 years old in 2018. She is running. State Representative Jim Newberger, Robert Bahmheiser, and Physician Jack Shepard are running for the Republican nomination. Minnesota ( special ) Main article : United States Senate special election in Minnesota, 2018 See also : List of United States Senators from Minnesota and United States Senate election in Minnesota, 2018 Two - term Democrat Al Franken announced that he would resign in December 2017, following allegations of sexual harassment. Mark Dayton, Governor of Minnesota, appointed Lt. Gov. Tina Smith on January 2, 2018, as an interim Senator until the November 2018 election. Democratic incumbent Tina Smith, Nick Leonard, Republican Karin Housley, and Republican Bob Anderson are running. Mississippi Main article : United States Senate election in Mississippi, 2018 See also : List of United States Senators from Mississippi and United States Senate special election in Mississippi, 2018 One - term Republican Roger Wicker won re-election with 57 % of the vote in 2012. He was appointed in 2007 and won a special election in 2008 to serve the remainder of Trent Lott 's term. He will be 67 years old in 2018. He is running. Jensen Bohren, David Baria, and Howard Sherman are seeking the Democratic nomination. Mississippi ( special ) Main article : United States Senate special election in Mississippi, 2018 See also : List of United States Senators from Mississippi and United States Senate election in Mississippi, 2018 Seven - term Republican Thad Cochran, who won re-election with 59.9 % of the vote in 2014, announced that he would resign April 1, 2018 due to health reasons. Phil Bryant, Governor of Mississippi, announced on March 21, 2018, that he would appoint Mississippi Agriculture Commissioner Cindy Hyde - Smith to fill the vacancy. She will be running in the special election. Former United States Secretary of Agriculture and member of the U.S. House of Representatives Mike Espy and Toby Bartee are running as Democratic candidates. Republican Chris McDaniel is also running. Missouri Main article : United States Senate election in Missouri, 2018 See also : List of United States Senators from Missouri Two - term Democrat Claire McCaskill was re-elected with 55 % of the vote in 2012. She will be 65 years old in 2018. She is running. She is being challenged in the Democratic primary by Angelica Earl. Attorney General Josh Hawley, Libertarian presidential candidate in 2016 Austin Petersen, assistant dean of aviation at University of Central Missouri Tony Monetti, and Courtland Sykes, are running for the Republican nomination. Japeth Campbell has declared his candidacy for the Libertarian nomination. Montana Main article : United States Senate election in Montana, 2018 See also : List of United States Senators from Montana Two - term Democrat Jon Tester was re-elected with 49 % of the vote in 2012. He will be 62 years old in 2018. He is running. State Auditor Matthew Rosendale, State Senator Albert Olszewski, former judge Russell Fagg, and Troy Downing are running for the Republican nomination. Green Party candidate Steve Kelly is running. Nebraska Nebraska election ← 2012 2024 → Nominee Deb Fischer Jane Raybould Party Republican Democratic Incumbent U.S. Senator Deb Fischer Republican Main article : United States Senate election in Nebraska, 2018 See also : List of United States Senators from Nebraska One - term Republican Deb Fischer was elected with 58 % of the vote in 2012. She will be 67 years old in 2018. She ran for and won the Republican nomination in the May 15 primary. Other Republicans who ran include retired professor Jack Heidel, Todd Watson, and Dennis Frank Macek. Lincoln Councilwoman Jane Raybould ran for and won the Democratic nomination in the May 15 primary. Other Democrats who ran include Frank Svoboda, Chris Janicek, and Larry Marvin, who was a candidate in 2008, 2012, and 2014. Jim Schultz is running for the Libertarian nomination. Nevada Main article : United States Senate election in Nevada, 2018 See also : List of United States Senators from Nevada One - term Republican Dean Heller was elected with 46 % of the vote in 2012. He had been appointed to the seat in 2011. He will be 58 years old in 2018. Heller considered running for governor, but has since chosen to seek re-election. Representative Jacky Rosen and Jesse Sbaih are running for the Democratic nomination. New Jersey Main article : United States Senate election in New Jersey, 2018 See also : List of United States Senators from New Jersey Two - term Democrat Bob Menendez was re-elected with 59 % of the vote in 2012. Menendez was originally appointed to the seat in January 2006. He will be 64 years old in 2018. He is running. Democrats Lisa McCormick Republicans Brian D. Goldberg and Bob Hugin are running. New Mexico Main article : United States Senate election in New Mexico, 2018 See also : List of United States Senators from New Mexico One - term Democrat Martin Heinrich was elected with 51 % of the vote in 2012. He will be 47 years old in 2018. He is running. Mick Rich is seeking the Republican nomination. Aubrey Dunn Jr., New Mexico Commissioner of Public Lands and otherwise the first Libertarian to ever hold statewide elected office in history, has announced his run for the seat. New York Main article : United States Senate election in New York, 2018 See also : List of United States Senators from New York One - term Democrat Kirsten Gillibrand was elected with 72 % of the vote in 2012. She had previously been appointed to the seat in 2009, and won a special election to remain in office in 2010. She will be 51 years old in 2018. She is running. Private equity executive Chele Chiavacci Farley has been nominated for U.S. Senate by the Republican and Conservative Parties. North Dakota Main article : United States Senate election in North Dakota, 2018 See also : List of United States Senators from North Dakota One - term Democrat Heidi Heitkamp was elected with 50 % of the vote in 2012. She will be 63 years old in 2018. She is running. Congressman Kevin Cramer and former Niagara, North Dakota Mayor Thomas O'Neill are running for the Republican nomination. Ohio Ohio election ← 2012 2024 → Nominee Sherrod Brown Jim Renacci Party Democratic Republican Incumbent U.S. Senator Sherrod Brown Democratic Main article : United States Senate election in Ohio, 2018 See also : List of United States Senators from Ohio Two - term Democrat Sherrod Brown was re-elected with 51 % of the vote in 2012. He will be 65 years old in 2018. He is running, and was unopposed in Democratic primary. U.S. Representative Jim Renacci ran for and won the Republican nomination in the May 8 primary. Other Republicans who ran include investment banker Michael Gibbons, businesswoman Melissa Ackison, Dan Kiley, and Don Elijah Eckhart. Pennsylvania Pennsylvania election ← 2012 2024 → Nominee Bob Casey Jr. Lou Barletta Party Democratic Republican Incumbent U.S. Senator Bob Casey Jr. Democratic Main article : United States Senate election in Pennsylvania, 2018 See also : List of United States Senators from Pennsylvania Two - term Democrat Bob Casey Jr. was re-elected with 54 % of the vote in 2012. He will be 58 years old in 2018. He is running, and won the Democratic primary unopposed. U.S. Representative Lou Barletta ran for and won the Republican nomination in the May 15 primary. Jim Christiana also ran for the Republican nomination. Rhode Island Main article : United States Senate election in Rhode Island, 2018 See also : List of United States Senators from Rhode Island Two - term Democrat Sheldon Whitehouse was re-elected with 64 % of the vote in 2012. He will be 63 years old in 2018. He is running. State Representative Robert Nardolillo and former Rhode Island Supreme Court Associate Justice Robert Flanders are running for the Republican nomination. Tennessee Main article : United States Senate election in Tennessee, 2018 See also : List of United States Senators from Tennessee Two - term Republican Bob Corker was re-elected with 65 % of the vote in 2012. He will be 66 years old in 2018. Senator Corker filed his Statement of Candidacy with the Secretary of the U.S. Senate to run for re-election, but on September 26, 2017, Senator Corker announced his intent to retire. Aaron Pettigrew and Republican U.S. Representative Marsha Blackburn are running for the Republican nomination. Former Tennessee Governor Phil Bredesen is seeking the Democratic nomination. Texas Texas election ← 2012 2024 → Nominee Ted Cruz Beto O'Rourke Party Republican Democratic Incumbent U.S. Senator Ted Cruz Republican Main article : United States Senate election in Texas, 2018 See also : List of United States Senators from Texas One - term Republican Ted Cruz was elected with 57 % of the vote in 2012. He will be 48 years old in 2018. He overwhelmingly won the Republican primary on March 6, 2018. Television producer Bruce Jacobson, Houston energy attorney Stefano de Stefano, former mayor of La Marque Geraldine Sam, Mary Miller, and Thomas Dillingham were Cruz 's opponents. U.S. Representative Beto O'Rourke won the Democratic nomination on March 6, 2018. Other Democrats who ran include Irasema Ramirez Hernandez and Edward Kimbrough. Nurse Carl Bible ran as an independent. Bob McNeil ran with the American Citizen Party. Utah Main article : United States Senate election in Utah, 2018 See also : List of United States Senators from Utah Seven - term Republican Orrin Hatch was re-elected with 65 % of the vote in 2012. Hatch is the President pro tempore of the United States Senate, as well as the second most - senior Senator. He will be 84 years old in 2018. Before the 2012 election, Hatch said that he would retire at the end of his seventh term if he was re-elected. Hatch initially announced his re-election campaign on March 9, 2017, but later announced his plans to retire on January 2, 2018. 2012 Republican presidential candidate Mitt Romney is running for the seat. Attorney Larry Meyers is also running for the Republican nomination. Professor James Singer was running for the Democratic nomination, but he dropped out and endorsed Salt Lake County Councilwoman Jenny Wilson, who made her Senate bid official on July 17, 2017. Danny Drew also was running but dropped out and endorsed Jenny Wilson. Mitchell Kent Vice is also running for the Democratic nomination. Vermont Main article : United States Senate election in Vermont, 2018 See also : List of United States Senators from Vermont Two - term Independent Senator Bernie Sanders was re-elected with 71 % of the vote in 2012. Sanders, one of two independent members of Congress, has caucused with the Democratic Party since taking office in 2007. In November 2015, Sanders announced his plans to run as a Democrat, rather than an Independent, in all future elections. He will be 77 years old in 2018. On July 28, 2016, Sanders announced he would return to the Senate as an Independent, and two days later, in an interview on Real Time with Bill Maher, he said that he would run for re-election. In 2016, activist and journalist Al Giordano stated his intention to challenge Sanders for the Democratic nomination to protest Sanders 's 2016 presidential campaign, which Giordano claims has divided the Democratic Party. In 2017, however, Giordano announced he would not run for the seat. Folasade Adeluola are running for the Democratic nomination. Virginia Main article : United States Senate election in Virginia, 2018 See also : List of United States Senators from Virginia One - term Democrat Tim Kaine was elected with 53 % of the vote in 2012. He will be 60 years old in 2018. He is running. State Delegate Nick Freitas, past Senate candidate and nominee for Lieutenant Governor in 2013 E.W. Jackson, and Prince William County Supervisor Corey Stewart are seeking the Republican nomination. Washington Main article : United States Senate election in Washington, 2018 See also : List of United States Senators from Washington Three - term Democrat Maria Cantwell was re-elected with 61 % of the vote in 2012. She will be 60 years old in 2018. She is running. Former state Republican Party chair Susan Hutchison is running. Jennifer Gigi Ferguson is running. Dave Strider is running as independents. Mike Luke is running with the Libertarian Party. West Virginia West Virginia election ← 2012 2024 → Nominee Joe Manchin Patrick Morrisey Party Democratic Republican Incumbent U.S. Senator Joe Manchin Democratic Main article : United States Senate election in West Virginia, 2018 See also : List of United States Senators from West Virginia One - term Democrat Joe Manchin was elected with 61 % of the vote in 2012. He originally won the seat in a 2010 special election. He will be 71 years old in 2018. Manchin is running for re-election, and won the May 8 Democratic primary. Environmental activist Paula Jean Swearengin, also ran for the Democratic nomination. West Virginia Attorney General Patrick Morrisey received the Republican nomination in the May 8 primary. Representative Evan Jenkins, coal miner Bo Copley, Jack Newbrough, Don Blankenship, and Tom Willis ran for the Republican nomination. Wisconsin Main article : United States Senate election in Wisconsin, 2018 See also : List of United States Senators from Wisconsin One - term Democrat Tammy Baldwin was elected with 51 % of the vote in 2012. She will be 56 years old in 2018. She is running. Mary Jo Walters, a Democratic candidate for Lieutenant Governor in the 2014 primary, and later that year a write - in candidate for Governor is running as an independent. State Senator Leah Vukmir, businessman and member of Wisconsin Board of Veterans Affairs Kevin Nicholson and John Schiess are running for the Republican nomination. Wyoming Main article : United States Senate election in Wyoming, 2018 See also : List of United States Senators from Wyoming One - term Republican John Barrasso was elected with 76 % of the vote in 2012. Barrasso was appointed to the seat in 2007, and won a special election in 2008. He will be 66 years old in 2018. He is running. 58 year old Gary Trauner, a Jackson Hole businessman and US House candidate in 2006 and 2008, is running for the Democratic nomination. Businessman Dave Dodson is running as an independent. See also United States gubernatorial elections, 2018 Notes Jump up ^ Mississippi will hold runoff for special election on November 27, 2018, in which no one candidate wins a majority of the vote in the November 6, 2018 jungle primary. ^ Jump up to : Constitution Party and Socialist Equality Party do not have ballot access in California. Don Grundmann ( C ) and David Moore ( SEP ) appear on ballot as `` No party preference. '' Jump up ^ American Citizen Party does not have ballot access in Texas. Bob McNeil appears on ballot as `` Independent. '' References Jump up ^ Including the United States Senate special election in Mississippi, 2018 Jump up ^ Including the United States Senate special election in Minnesota, 2018 Jump up ^ Michael Wines ( October 14, 2017 ). `` Wary of Hackers, States Move to Upgrade Voting Systems ''. Nytimes.com. Retrieved October 17, 2017. ^ Jump up to : Dick, Jason ( January 20, 2016 ). `` Senate Democrats, 2018 Math Is Not Your Friend ''. Roll Call. Retrieved August 2, 2016. Jump up ^ Livingston, Abby ( January 6, 2017 ). `` Rep. Beto O'Rourke `` very likely '' to run for Sen. Ted Cruz 's seat in 2018 ``. The Texas Tribune. Retrieved January 19, 2017. Jump up ^ Pramuk, Jacob ( September 26, 2017 ). `` Republican Sen. Bob Corker of Tennessee will not seek re-election, long - shot opportunity for Democrats ''. CNBC. Retrieved September 26, 2017. Jump up ^ Kondik, Kyle ( July 25, 2013 ). `` Senate 2014 and Beyond ''. Sabato 's Crystal Ball. Retrieved September 19, 2013. Jump up ^ Fram, Alan ( November 11, 2016 ). `` Several Democrats facing 2018 re-election are from states Trump carried ''. PBS NewsHour. Retrieved November 12, 2016. Jump up ^ Bobic, Igor ( November 5, 2014 ). `` Independent Angus King Will Continue To Caucus With Senate Democrats ''. Huffington Post. Retrieved November 6, 2014. Jump up ^ Gaudiano, Nicole ( October 23, 2014 ). `` Bernie Sanders to caucus with GOP ? Fat chance, he says ''. USA Today. Retrieved November 6, 2014. Jump up ^ `` 2016 State PVI Changes -- Decision Desk HQ ''. decisiondeskhq.com. December 15, 2017. Jump up ^ `` 2018 Senate Race Ratings ''. Cook Political Report. January 5, 2018. Jump up ^ `` Senate Ratings ''. Inside Elections. January 5, 2018. Jump up ^ `` 2017 - 2018 Crystal Ball Senate race ratings map ''. University of Virginia Center for Politics. May 9, 2018. Jump up ^ `` 2018 Election Calendar and Results ''. The New York Times. Retrieved January 24, 2018. Jump up ^ `` CNN Key Races : Democrats ' tough Senate map ''. CNN. Retrieved January 30, 2018. Jump up ^ `` Battle for the Senate 2018 ''. RCP. Retrieved March 28, 2018. Jump up ^ `` Daily Kos Elections 2018 Primary Calendar ''. Daily Kos Elections. Retrieved January 30, 2018. ^ Jump up to : `` 2018 Primary and Runoff Elections for Statewide offices and Congress Chronologically with Filing Deadlines ''. The Green Papers. Retrieved November 14, 2017. Jump up ^ `` 2018 Poll Closing Times for Statewide office and Congress General Election Chronologically ''. The Green Papers. Retrieved November 14, 2017. ^ Jump up to : Potter, Kyle ( December 13, 2017 ). `` Minnesota Governor Picks Lt. Governor Tina Smith to Replace Al Franken in the U.S. Senate ''. Time. Retrieved December 13, 2017. ^ Jump up to : Staff, MPR News. `` Replacing Franken : Who 's in, who 's out, who 's being talked about ''. Jump up ^ Orrick, Dave ( December 19, 2017 ). `` Washington County Republican Karin Housley wants Al Franken 's Senate seat ''. St. Paul Pioneer Press. Retrieved December 19, 2017. ^ Jump up to : Magan, Christopher ( February 5, 2018 ). `` Fellow Democrat Nick Leonard to challenge Tina Smith for Senate seat ''. St. Paul Pioneer Press. Retrieved February 6, 2018. Jump up ^ `` Painter For Minnesota ''. painterminnesota.com. Retrieved May 23, 2018. ^ Jump up to : `` 2018 Mississippi Candidate Qualifying List '' ( PDF ). Mississippi Secretary of State. Retrieved March 24, 2018. ^ Jump up to : `` 2018 Primary Election ''. Arizona Secretary of State. Retrieved May 25, 2018. ^ Jump up to : `` Airshow Pilot Bob Bishop Launches U.S. Senate Campaign ''. Aero - News Network. September 19, 2017. Retrieved November 14, 2017. ^ Jump up to : Roth, R ( September 25, 2017 ). `` Former `` Revenge Porn Website '' Mastermind Declares Run For Arizona Senate ``. Arizona Daily Independent. Retrieved October 7, 2017. ^ Jump up to : `` DIEGEL, CHRISTIAN - Candidate overview ''. FEC.gov. Retrieved December 17, 2017. ^ Jump up to : `` GRIFFIN, MICHELLE MARIE DR PHD - Candidate overview ''. FEC.gov. Jump up ^ JETTE, MATT DR. Jump up ^ `` MARKS, DOUG - Candidate overview ''. FEC.gov. Jump up ^ `` REDD, SHAWN - Candidate overview ''. FEC.gov. Retrieved May 23, 2018. Jump up ^ `` RUBEN, DAVID ALAN - Candidate overview ''. FEC.gov. Retrieved May 23, 2018. ^ Jump up to : `` RUSSELL, DALE CHRISTOPHER - Candidate overview ''. FEC.gov. ^ Jump up to : Nowicki, Dan ( July 15, 2017 ). `` How much re-election trouble is Sen. Jeff Flake really in ? ''. The Arizona Republic. Retrieved July 21, 2017. ^ Jump up to : `` TUTORA, NICHOLAS - Candidate overview ''. FEC.gov. ^ Jump up to : `` California Candidate List '' ( PDF ). California Secretary of State. Retrieved March 24, 2018. Jump up ^ `` Candidates for Public Office ''. Constitutionpartyofcalifornia.org. Retrieved 2018 - 04 - 04. Jump up ^ `` Socialist Equality Party announces California candidates in midterm elections ''. Wsws.org. 2018 - 04 - 03. Retrieved 2018 - 04 - 04. ^ Jump up to : ( 1 ) ^ Jump up to : Bass, Paul ( December 23, 2016 ). `` Murphy Navigates A Changed World ''. New Haven Independent. Retrieved December 29, 2016. ^ Jump up to : `` ADAMS, ANN MARIE DR - Candidate overview - FEC.gov ''. FEC.gov. ^ Jump up to : Altimari, Danielle ( August 22, 2017 ). `` Corey Planning U.S. Senate Run Against Murphy ''. Hartford Courant. Retrieved August 22, 2017. ^ Jump up to : McGuiness, Dylan ( June 27, 2017 ). `` Branford Republican Announces Campaign for U.S. Senate ''. Hartford Courant. Retrieved July 13, 2017. ^ Jump up to : `` Kailani Koenig on Twitter ''. July 24, 2017. Retrieved July 24, 2017. Jump up ^ `` United States Senate election in Delaware, 2018 ''. Wikipedia. 2018 - 04 - 28. Jump up ^ Mueller, Sarah. `` Kerri Harris challenges Carper in September primary ''. Retrieved March 11, 2018. ^ Jump up to : `` Candidate Listing for 2018 General Election ''. Florida Department of State. Retrieved April 10, 2018. ^ Jump up to : Blair, Chad ( January 2, 2017 ). `` Warren Makes Pitch For Hirono ''. Honolulu Civil Beat. Retrieved February 23, 2017. ^ Jump up to : `` WHITE, THOMAS EDWARD MR - Candidate overview ''. FEC.gov. Retrieved May 23, 2018. ^ Jump up to : `` Indiana Secretary of State Official Candidates '' ( PDF ). Indiana Secretary of State. February 10, 2018. Retrieved February 10, 2018. ^ Jump up to : `` Senator King Responds to LePage 's Possible Senate Run in 2018 WABI TV5 ''. Retrieved November 22, 2016. ^ Jump up to : `` Maine Candidates Lists ''. Leuitenant Governor Election. Retrieved March 17, 2018. ^ Jump up to : Elections, Maryland State Board of. `` 2018 Candidate Listing ''. elections.state.md.us. Retrieved January 16, 2018. ^ Jump up to : `` Independent to launch bid for Senate in Maryland ''. POLITICO. Retrieved February 8, 2018. ^ Jump up to : `` Shlikas will fix it ! ''. Shlikas for Senate. Retrieved December 20, 2017. ^ Jump up to : Hagan, Lisa ( January 6, 2017 ). `` Warren says she will run for reelection ''. The Hill. Retrieved January 7, 2017. ^ Jump up to : `` Dr. Shiva Ayyadurai on Twitter : `` Today Shiva 4 Senate dumped the MA GOP Establishment and Declared Our Independence ''. Twitter. November 11, 2017. Retrieved November 11, 2017. ^ Jump up to : O'Sullivan, Jim ( April 5, 2017 ). `` GOP 's Geoff Diehl sets stage to challenge Elizabeth Warren ''. The Boston Globe. Retrieved July 11, 2017. Jump up ^ `` DEVINE, JOHN P - Candidate overview - FEC.gov ''. FEC.gov. Jump up ^ Gallerani, Katheryn ( March 17, 2017 ). `` Joshua Ford declares for U.S. Senate ''. Kingston Reporter. Retrieved August 22, 2017. ^ Jump up to : Dezenski, Lauren ( October 25, 2017 ). `` Kingston makes it official ''. Politico. Retrieved October 26, 2017. ^ Jump up to : O'Sullivan, Jim ( August 21, 2017 ). `` GOP 's Beth Lindstrom to launch challenge to Elizabeth Warren in 2018 ''. The Boston Globe. Retrieved August 21, 2017. ^ Jump up to : `` MITCHELL, DARIUS - Candidate overview ''. FEC.gov. ^ Jump up to : Phillips, Frank ( January 12, 2017 ). `` GOP Senate candidate readies for ' street fight ' ''. The Boston Globe. Retrieved April 25, 2017. ^ Jump up to : `` WELLMAN, HEIDI M - Candidate overview ''. FEC.gov. ^ Jump up to : `` 2018 Michigan Candidate Listing ''. Michigan Secretary of State. Retrieved April 24, 2018. Jump up ^ `` Who 's running for Congress in Michigan ? Here 's what we know ''. Detroit Free Press. Retrieved 2018 - 05 - 05. Jump up ^ Johnson, Ruth ( August 22, 2017 ). `` State of Michigan Political Party Status '' ( PDF ). State of Michigan. ^ Jump up to : Sherry, Allison ( December 25, 2016 ). `` Klobuchar will run again for Senate, rules herself out for governor 's race ''. Star Tribune. Retrieved December 26, 2016. ^ Jump up to : `` BARNHEISER, ROBERT BRUCE - Candidate overview ''. FEC.gov. Retrieved December 21, 2017. ^ Jump up to : Stassen - Berger, Rachel ( August 5, 2017 ). `` Challenger emerges to run against U.S. Sen. Amy Klobuchar - GOP state Representative Jim Newberger ''. Pioneer Press. Retrieved August 10, 2017. Jump up ^ `` Transgender candidate announces U.S. Senate campaign in Minn.,... ''. Retrieved January 30, 2018. ^ Jump up to : `` President Trump Please Endorse Jack Shepard For The Gop Nomination For The U.S. Senate From The State Of Minnesota ''. Jackshepard.net. Retrieved December 20, 2017. Jump up ^ This state 's election has a primary run - off election under certain conditions. ^ Jump up to : `` Missouri Candidates Lists ''. Missouri Secretary of State. Retrieved March 17, 2018. ^ Jump up to : `` Montana Primary Candidates Lists ''. Montana Secretary of state. ^ Jump up to : `` Official Nebraska Candidate Lists '' ( PDF ). Nebraska Secretary of State. March 1, 2018. Retrieved March 2, 2018. ^ Jump up to : `` Nevada Candidates Lists ''. Nevada Secretary of state. ^ Jump up to : `` Unofficial List Candidates of US Senate '' ( PDF ). New Jersey Election. Retrieved April 11, 2018. ^ Jump up to : `` New Mexico Major Parties Candidates ''. KRWG.org. Retrieved March 26, 2018. ^ Jump up to : `` Who Filed Report ''. New York State Board of Election. Retrieved April 10, 2018. ^ Jump up to : `` 2018 Primary Contest Candidate List ''. North Dakota Secretary of State. Retrieved April 9, 2018. ^ Jump up to : `` Secretary of State Jon Husted Receives Statewide Candidate Petitions for May Primary ''. Ohio Secretary of State. Retrieved March 23, 2018. Jump up ^ `` FARLEY, PHILENA IRENE - Candidate overview ''. FEC.gov. Retrieved May 23, 2018. ^ Jump up to : `` Pennsylvania Candidates Lists ''. Pennsylvania Secretary of State. Retrieved March 20, 2018. ^ Jump up to : Gregg, Katherine ( December 22, 2016 ). `` Sen. Whitehouse : ' Plenty of opportunity for us to have fights with the president ' ''. The Providence Journal. Retrieved December 27, 2016. ^ Jump up to : `` FLANDERS, ROBERT MR - Candidate overview ''. FEC.gov. ^ Jump up to : `` NARDOLILLO, ROBERT ANTHONY III - Candidate overview ''. FEC.gov. ^ Jump up to : `` Tennessee candidates Lists '' ( PDF ). Tennessee Secretary of State. Retrieved March 23, 2018. ^ Jump up to : `` BIBLE, CARL ALEXANDER - Candidate overview ''. FEC.gov. Retrieved December 21, 2017. ^ Jump up to : Sullivan, Sean ( May 11, 2016 ). `` Ted Cruz files to run for reelection to the Senate in 2018 ''. The Washington Post. Retrieved July 25, 2016. Jump up ^ `` DIKEMAN, NEAL MONROE - Candidate overview ''. FEC.gov. Retrieved May 23, 2018. Jump up ^ `` Cruz Leads O'Rourke in New Senate Poll ''. amarillopioneer.com. Retrieved May 23, 2018. Jump up ^ `` Bob McNeil - Ballotpedia ''. ballotpedia.org. Retrieved May 23, 2018. ^ Jump up to : `` AmericanCitizenParty.us ''. americancitizenparty.us. Jump up ^ Tracy, Abigail ( May 31, 2017 ). `` Meet the Kennedyesque Democrat trying to beat Ted Cruz ''. Vanity Fair. Retrieved July 13, 2017. ^ Jump up to : `` Utah Candidats Lists ''. Utah Lieutenant Governor Election. Retrieved March 13, 2018. ^ Jump up to : `` 2018 Candidates listing ''. Vermont Secretary of State. Retrieved May 25, 2018. ^ Jump up to : `` Certified Candidates and Ballot Order for June 12, 2018 Primary Elections '' ( PDF ). Virginia Department of Elections. Retrieved April 5, 2018. Jump up ^ `` Waters For U.S. Senate -- The Virginian ''. Matt Waters for US Senate. Retrieved May 23, 2018. ^ Jump up to : `` 2018 Candidates Who Have Filed ''. Washington Secretary of State. Retrieved May 18, 2018. ^ Jump up to : `` West Virginia Candidates Lists '' ( PDF ). West Virginia Secretary of State. Retrieved March 4, 2018. ^ Jump up to : `` Candidate Tracking by Office '' ( PDF ). Wisconsin Election Commission. Retrieved May 24, 2018. ^ Jump up to : `` 2018 Primary Election Candidate Roster '' ( PDF ). Wyoming Secretary of State. Retrieved May 23, 2018. ^ Jump up to : `` Wealthy independent enters Wyoming US Senate race ''. Retrieved March 6, 2018. Jump up ^ Jeff Flake ( October 24, 2017 ). `` Flake Announces Senate Future ''. United States Senator Jeff Flake. Retrieved December 20, 2017. Jump up ^ Caplan, David. `` Sen. John McCain diagnosed with brain tumor after blood clot removed '', ABC News ( July 19, 2017 ). Jump up ^ Arizona State Legislature. `` Vacancy in the office of United States senator or representative '', Arizona State Legislature ( January 14, 2018 ). ^ Jump up to : `` Candidate List - 2018 Primary Election '' ( PDF ). Indiana Secretary of State. February 12, 2018. Retrieved February 12, 2018. Jump up ^ Blake, Aaron ( November 5, 2014 ). `` Angus King and Joe Manchin are sticking with the Democrats. Because, of course ''. Washington Post. Retrieved May 28, 2015. Jump up ^ `` LePage says comment about Senate run a joke ''. WMTW - TV. January 13, 2015. Retrieved June 22, 2015. Jump up ^ Shepherd, Michael ( April 3, 2017 ). `` GOP state senator Eric Brakey kicks off underdog 2018 bid to unseat Angus King ''. Bangor Daily News. Retrieved April 25, 2017. Jump up ^ `` Educator Ringlestein declares candidacy for U.S. Senate seat ''. WGME. October 6, 2017. Retrieved October 7, 2017. Jump up ^ `` Michigan 's 14th Congressional District election, 2016 - Ballotpedia ''. Retrieved March 12, 2018. Jump up ^ `` CERTIFICATE OF APPOINTMENT OF UNITED STATES SENATOR FROM MINNESOTA '' ( PDF ). January 2, 2018. Retrieved February 23, 2018. Jump up ^ Domonoske, Camila ( December 13, 2017 ). `` Minnesota Lt. Gov. Tina Smith Will Replace Al Franken in U.S. Senate ''. NPR. Retrieved December 13, 2017. Jump up ^ Jacobs, Ben ( March 5, 2018 ). `` Mississippi Senator Thad Cochran announces he is stepping down ''. the Guardian. Retrieved March 5, 2018. Jump up ^ `` Tupelo Mayor Jason Shelton pulls out of U.S. senate race ''. wcbi.com. May 8, 2018. Retrieved May 23, 2018. Jump up ^ `` Larry Crim Announces U.S. Senate 2018 Race For Seat Held By Corker ''. chattanoogan.com. Retrieved February 21, 2017. Jump up ^ `` Corker to end Senate career with this term ''. Retrieved September 26, 2017. Jump up ^ `` Ted Cruz plans to run for re-election in 2018 ''. CNN. Retrieved November 22, 2016. Jump up ^ Wang, Jackie ( November 16, 2017 ). `` Christian TV producer challenging Sen. Ted Cruz in GOP primary ''. Dallas Morning News. Retrieved November 16, 2017. Jump up ^ `` Statement of Organization '' ( PDF ). FEC Form 1. June 9, 2017. Retrieved June 14, 2017. Jump up ^ Tinsley, Anna M. ( November 11, 2017 ). `` 2018 Election : First day of filing begins with a rush of candidates ''. Fort Worth Star - Telegram. Retrieved November 16, 2017. Jump up ^ `` MILLER, MARY ANN - Candidate overview ''. FEC.gov. Jump up ^ `` Former Birdville schools employee joins GOP race to unseat Sen. Ted Cruz ''. Star - Telegram. Retrieved December 1, 2017. Jump up ^ `` Texas democrat Beto O'Rourke announces bid to unseat Ted Cruz ''. Business Insider. Associated Press. Retrieved March 31, 2017. Jump up ^ `` HERNANDEZ, IRASEMA RAMIREZ - Candidate overview ''. FEC.gov. Jump up ^ Tinsley, Anna ( December 9, 2017 ). `` Deadline for 2018 primary ballot : Monday. Here 's who is already in the race ''. Fort Worth Star - Telegram. Retrieved December 17, 2017. Jump up ^ Lederman, Josh ( March 3, 2012 ). `` Hatch will retire in 2018 if he wins reelection ''. The Hill. Jump up ^ Raju, Manu ( March 9, 2017 ). `` First on CNN : After lobbying from Trump, Orrin Hatch plans to run again ''. CNN. Retrieved March 11, 2017. Jump up ^ Dennis Romboy ( November 6, 2014 ). `` Sen. Orrin Hatch leaves door ajar for run in 2018 ''. Deseret News. Retrieved December 12, 2014. Jump up ^ Tanner, Courtney ( May 3, 2017 ). `` Navajo candidate announces bid as Democrat for Hatch 's seat ''. The Salt Lake Tribune. Retrieved June 13, 2017. Jump up ^ Breiner, Andrew ( June 21, 2017 ). `` Navajo Candidate Drops Out of Race Against Hatch ''. Roll Call. Retrieved June 21, 2017. Jump up ^ Schott, Bryan ( April 12, 2017 ). `` Another Democrat looking to knock off Hatch in 2008 ''. Utah Policy. Retrieved April 12, 2017. Jump up ^ `` Thank You ''. Danny Drew For U.S. Senate. Retrieved October 3, 2017. Jump up ^ Blomquist, Dan and Way, Robert. `` Bernie Sanders files for Democratic ballot in N.H. primary '', Boston Globe ( November 5, 2015 ) : `` When a reporter asked Sanders his party allegiance after he filed, Sanders responded, ' I 'm a Democrat. ' He then called on Buckley, the Democratic chairman, who confirmed the senator 's party allegiance. Sanders added that he would run as a Democrat in any future elections. '' Jump up ^ `` No, Sanders did NOT file for re-election as an independent in 2018 ''. Retrieved November 22, 2016. Jump up ^ Joy - Ann Reid ( June 6, 2016 ). `` Meet Al Giordano, the Man Who Wants to Take Bernie Down ''. The Daily Beast. Retrieved June 20, 2016. Jump up ^ Noah Berlatsky ( June 9, 2016 ). `` Could this political gadfly steal Bernie Sanders ' Senate seat ? ''. The Week. Retrieved June 20, 2016. Jump up ^ Clauss, Kyle Scott ( June 8, 2016 ). `` Former Boston Phoenix Reporter Wants to Take Bernie Sanders ' Senate Seat ''. Boston Magazine. Retrieved June 16, 2016. Jump up ^ Giordano, Al ( April 18, 2017 ) `` @ algiordano : I have said many times I am not a candidate for office. I am fighting cancer. Please make room for someone else to run by not mentioning me. 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Question: how many republicans are in the senate in 2018
Answer: 51