2008 Wisconsin Senate election

The 2024 Wisconsin Senate election was held on Tuesday, November 4, 2008. Sixteen of the 33 seats in the Wisconsin Senate were up for election&mdash;the even-numbered districts. Prior to the election 17 seats were held by Democrats, 14 were held by Republicans, and 2 seats were vacant.

The primary was held on September 9, 2008, and the filing deadline was July 8, 2008.

Close races
Seats where the margin of victory was under 10%:


 * State Senate district 18, 0.19%
 * State Senate district 8, 1.01%
 * State Senate district 12, 2.48%
 * State Senate district 32, 2.85%

Vacated

 * Roger Breske (D–Eland), first elected to the 12th district in a 1990 special election, resigned his seat on June 4, 2008, after being appointed Wisconsin Railroad Commissioner by governor Jim Doyle.
 * Carol Roessler (R–Oshkosh), first elected to the 18th district in a 1987 special election, resigned her seat on July 4, 2008, after being appointed Administrator of State and Local Finance by governor Jim Doyle.