The 2002 United States Senate elections featured a series of fiercely contested elections that resulted in a victory for the Republican Party, which gained two seats and thus a narrow majority from the Democratic Party in the United States Senate. The Senate seats up for election, known as class 2 Senate seats, were last up for regular election in 1996. The election cycle was held on November 5, 2002, almost fourteen months after the September 11, 2001 attacks.

Chester Trent Lott Sr. is an American lobbyist, lawyer, author, and politician who represented Mississippi in the United States House of Representatives from 1973 to 1989 and in the United States Senate from 1989 to 2007. Lott served in numerous leadership positions in both chambers of Congress as one of the first of a wave of Republicans winning seats in Southern states that had been solidly Democratic. Later in his career, he served twice as Senate Majority Leader, and also, alternately, Senate Minority Leader. In 2003, he stepped down from the position after controversy due to his praising of Senator Strom Thurmond's 1948 segregationist Dixiecrat presidential bid.