2008 Wisconsin State Senate election

← 2006 November 4, 2008 2010 →
← 2004 2011 (recall) →
16 of 33 seats in theWisconsin Senate 17 seats needed for a majority
Majority party Minority party   Leader Russ Decker Scott L. Fitzgerald Party Democratic Republican Leader since October 24, 2007 January 1, 2007 Leader's seat 29th–Weston 13th–Juneau Last election 10 seats, 49.68% 7 seats, 49.25% Seats before 18 15 Seats won 8 8 Seats after 18 15 Seat change Popular vote 666,668 575,543 Percentage 52.74% 45.53% Swing 3.06pp 3.72pp
Results by seat gains Results by vote share Map of the incumbents:      Democratic hold      Republican hold      No election Democratic:     50–60%     60–70%     >90% Republican:     50–60%     >90%
President before election Fred Risser Democratic Elected President Fred Risser Democratic

The2008 Wisconsin Senate election was held on Tuesday, November 4, 2008. Sixteen of the 33 seats in theWisconsin Senate were up for election—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.

Seats		Party (majority caucus shading)		Total
		Democratic	Republican
Last election (2006)		9	8	17
Total after last election (2006)		18	15	33
Total before this election		18	15	33
Up for election		8	8	16
of which:	Incumbent retiring	1	1	2
	Vacated	1	1	2
	Unopposed	4	2	6
This election		8	8	16
Change from last election
Total after this election		18	15	33
Change in total

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%

• Roger Breske (D–Eland), first elected to the 12th district in a 1990 special election, resigned his seat on June 4, 2008, after being appointedWisconsin Railroad Commissioner by governorJim Doyle.^[1]
• 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.

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