The 1950 United States Senate election in Florida was held on November 7, 1950. Incumbent Senator Claude Pepper ran for a third term in office but was defeated in the Democratic primary by U.S. Representative George Smathers, who went on to easily win the general election.
The primary campaign has been described as one of the "most bitter and ugly campaigns in Florida political history." Pepper was targeted for his opposition to incumbent President Harry Truman during the 1948 Democratic Party presidential primaries. Smathers also accused Pepper of ties to communist organizations and the Soviet Union, making this race emblematic of the second Red Scare in American politics.

The general election was low-key, as the Democratic primary was effectively tantamount to election. Smathers defeated Republican John P. Booth in a landslide. After the election, Pepper remained active in politics, mounting an unsuccessful run for Senate again in 1958 and then winning an election to a U.S. House seat in 1962, a position he held until his death in 1989. Smathers served in the Senate until retiring in 1968.

Background
Early in his senate career, Claude Pepper was a close ally of President Franklin D. Roosevelt and was among the leading advocates for the passage of New Deal legislation. According to a personal account by Pepper, following his closer than expected re-election in 1944, efforts began to mobilize for his defeat in 1950. Wealthy businessman Edward Ball raised approximately $62,000 in a single afternoon for a war chest that would later be used to beat Pepper. After Roosevelt's death in 1945, Pepper provided only lukewarm support to his successor – Harry Truman. Pepper had been part of an unsuccessful 1948 campaign to "dump" Truman as the Democratic presidential nominee and suggested that the Democrats nominate Dwight D. Eisenhower, who had no political party affiliation at the time. Tensions began to grow between Truman and Pepper.

During the summer of 1949, then-U.S. House Representative George Smathers began to seriously contemplate running for the senate seat. Truman called Smathers into a White House meeting, when Truman reportedly said, "I want you to do me a favor. I want you to beat that son-of-a-bitch Claude Pepper." In August, Pepper received a letter from Smathers' brother Frank, indicating that George would run against Pepper unless he was nominated for Solicitor General of the United States, if Smathers would be allowed to have a say in the nomination of a new senator if a vacancy resulted, and if Smathers were to receive the support of Pepper if he ran for governor in 1952. Pepper refused the deal and spoke with Truman during his visit to Miami, when Truman promised to assist Pepper in winning re-election.
Democratic primary
Candidates
Claude Pepper, incumbent U.S. Senator since 1936
George Smathers, U.S. Representative from Miami
Campaign
The Democratic primary for the 1950 United States Senate election in Florida was described as the "most bitter and ugly campaigns in Florida political history." Ormund Powers, a Central Florida historian, noted that ABC and NBC commentator David Brinkley said that "the Peppers-Smathers campaign would always stand out in his mind as the dirtiest in the history of American politics". On January 12, 1950, U.S. Representative George A. Smathers declared his candidacy for the race in Orlando at Kemp's Coliseum, where about 3,000 supporters had gathered. In his opening speech, Smathers accused Pepper of being "the leader of the radicals and extremists", an advocate of treason, and a person against the constitutional rights of Americans. Ed Ball, a power in state politics who had broken with Claude Pepper, financed his opponent, Smathers.
Prior to the entry of Smathers and Pepper, Orlando attorney James G. Horrell campaigned for the seat. Horrell researched Pepper's weaknesses and the state's voters. Horrell also compiled a list of communist-front groups that Pepper had communicated with. On the day that Pepper declared his candidacy, Horrell withdrew and endorsed Smathers. Horrell also sent his reports about Pepper to Smathers, which he used throughout the next few months. This would also prevent the chance of a run-off election. In late February and early March, the Jacksonville Journal conducted a poll in 11 counties important for the election. Smathers led by about 2-to-1 and dominated in Duval, Pinellas, and Volusia counties, while he was also statistically tied with Pepper in Dade, Escambia, and Hillsborough counties. However, Smathers did not trail in any of the 11 counties.




