Title: List of United States senators from Louisiana
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Title: President of the Louisiana State Senate
Content:  The President of the Louisiana State Senate is the highest-ranking member of the Louisiana State Senate. As presiding officer, he or she convenes session and calls members to order, but can designate another state senator to preside in his or her place. The Louisiana state senate president is fifth in gubernatorial line of succession in Louisiana. The president's counterpart in the lower house of the Louisiana Legislature is the Speaker of the Louisiana House of Representatives, currently Republican Clay Schexnayder.
Title: 2008 United States Senate election in Louisiana
Content:  The 2008 United States Senate election in Louisiana was held on November 4, 2008. This was the first time since the 1970s that Louisiana used primaries for federal races. Incumbent Democratic Senator Mary Landrieu won reelection to a third term, defeating Republican (and former Democrat) John Kennedy. Despite being forecast as one of the most vulnerable Senate Democrats during 2008, Landrieu won a comfortable victory of 6.4 percentage points due to the national Democratic lean. Landrieu had received praise and wide publicity for her advocacy after Hurricane Katrina, particularly during hearings regarding FEMA's response to the disaster. Kennedy had switched parties in 2007, just one year before the election, garnering allegations of being a political opportunist. Kennedy would go on to win the state's other U.S. Senate seat in 2016. As of 2022, this is the last time that the Democrats won a U.S. Senate election in Louisiana.
Title: Bill Cassidy
Content:  William Morgan Cassidy (born September 28, 1957) is an American physician and politician serving as the senior United States senator from Louisiana, a seat he has held since 2015. A member of the Republican Party, he served in the Louisiana State Senate from 2006 to 2009 and in the U.S. House of Representatives from 2009 to 2015. Born in Highland Park, Illinois, Cassidy is a graduate of Louisiana State University (LSU) and LSU School of Medicine. A gastroenterologist, he was elected to the Louisiana State Senate from the 16th district which included parts of Baton Rouge, in 2006. In 2008, he was elected as the U.S. representative for Louisiana's 6th congressional district, defeating Democratic incumbent Don Cazayoux. In 2014, Cassidy defeated Democratic incumbent Mary Landrieu to represent Louisiana in the U.S. Senate, becoming the first Republican to hold the seat since Reconstruction. He was reelected in 2020. Cassidy was one of seven Republican senators to vote to convict Donald Trump of incitement of insurrection in his second impeachment trial. As a result, the Republican Party of Louisiana censured him.
Title: Louisiana State Senate
Content:  The president of the Louisiana State Senate is the presiding officer of the Louisiana State Senate and the highest-ranking state senator. The President is elected by the members of the state senate. Although not mandated by law or the Louisiana Constitution, the governor usually chooses the president, who in turn is usually elected by a near-unanimous, if not unanimous, vote. The president is usually chosen from the majority party, even if it is not the governor's party, although this is not always the case. One example of this is when Republican Governor Mike Foster chose Republican State Senator John J. Hainkel Jr. to serve as senate president even though the Democrats had a large majority. One factor that allows for this is that the Governor usually has support on both sides of the aisle when he first enters office so his appointees, including the senate president, are usually confirmed easily. The president is fifth in the line of succession to the governorship after the lieutenant governor, secretary of state, attorney general, and state treasurer.
Title: John Kennedy (Louisiana politician)
Content:  Kennedy was sworn in as Louisiana's junior U.S. Senator on January 3, 2017. On March 10, 2021, the Center for Effective Lawmaking ranked Kennedy as one of the top 10 most effective Republican senators of the 116th Congress, and as the most effective GOP senator in the areas of commerce, education, and trade. On July 29, 2021, President Joe Biden signed Kennedy's DUMP Opioids Act into law, making that Kennedy's eighth piece of legislation to become law in his first term as a U.S. senator. Kennedy has authored more bills signed into law than any first-term senator from Louisiana except Newton Blanchard, who is tied with Kennedy. In June 2017, Kennedy "grilled" Education Secretary 
Title: List of United States senators from Louisiana
Content:  Louisiana was admitted to the Union on April 30, 1812, and elects senators to Class 2 and Class 3. Its current senators are Republicans Bill Cassidy and John Kennedy.
Title: Faubourg Lafayette
Content:  Cedric Richmond represents it. He is a member of the Democratic Party and has been a U.S. Representative for Louisiana's 2nd congressional district since 2011. Karen Carter Peterson is the present State Senator for Louisiana. She has been a democratic member of the Louisiana State Senate, and has represented Louisiana since 2010. Currently she is Chairperson of the Louisiana Democratic Party. She is also the first female to serves as chair of Louisiana's Democratic Party, and since 2008 she has served as Democratic National Committeewomen of Louisiana. Prior to serving as the State Senator, she served in the Louisiana House of Representatives. State Representatives Walt Leger, Neil Abramson, and 
Title: 2014 United States Senate election in Louisiana
Content:  The 2014 United States Senate election in Louisiana was held on November 4, 2014, to elect a member of the United States Senate to represent the State of Louisiana. As no candidate won a majority of the vote, a runoff was held on December 6, 2014. Incumbent Democratic Senator Mary Landrieu ran for re-election to a fourth term in office against Republican U.S. Representative Bill Cassidy and several other candidates. Under Louisiana's jungle primary system, all candidates appear on the same ballot, regardless of party and voters may vote for any candidate, regardless of their party affiliation. Louisiana is the only state that has a jungle primary system (California 
Title: Louisiana State Senate
Content:  The Louisiana State Senate (Sénat de Louisiane) is the upper house of the state legislature of Louisiana. All senators serve four-year terms and are assigned to multiple committees.

Question: who is the senior senator of louisiana?
Answer: Mary Landrieu.