As a result of the 1900 U.S. Census, Florida was apportioned a third U.S. House seat for the 1902 election. Lamar received the Democratic nomination in 1902, and ran unopposed in the general election.
Following the 1900 U.S. Census, Florida's representation in Congress increased with the addition of a third House seat for the 1902 elections. In 1902, Lamar received the Democratic party's backing and emerged victorious in the general election without facing any opponents.