2009 Erie County, Pennsylvania Executive election

The 2009 Erie County Executive election was held on November 3, 2009. Incumbent Democratic County Executive Mark A. DiVecchio ran for re-election to a second term. However, he was defeated in the Democratic primary by restaurant owner Barry Grossman. In the general election, Grossman faced Mike Kerner, a manufacturing executive and the Republican nominee. Grossman narrowly defeated Kerner, winning by a 343-vote margin. The closeness of the race, coupled with the discovery of several uncounted voting machines two days after the election, meant that the race was not immediately called, and Kerner initially declined to concede.