The 2003 Evansville, Indiana mayoral election was held on November 4, 2003, and saw the election of Democrat Jonathan Weinzapfel, who unseated incumbent Republican mayor Russell G. Lloyd Jr..
Incumbent Russell G. Lloyd was challenged by Douglas DeGroot, who ran a frugal campaign.[2] DeGroot's performance in the vote was regarded as surprisingly strong.[3]
2003 was a good year for Democrats in Indiana's mayoral elections, with the party winning control of the mayoralties of all of the state's top seven most populous cities for the first time since 1959.[4] The Democratic Party also won control of the mayoralties in twenty of the state's thirty cities with populations above 25,000.[4] Additionally, in 2003, Democrats won more than 56% of partisan mayoral races in Indiana.[5]
During the general election, Vanderburgh County, where Evansville is located, saw voter turnout of 25% in its various elections.[6]