The 2012 Colorado Senate election was held on November 6, 2012, to determine which party would control the Colorado Senate for the following two years in the 69th Colorado General Assembly. Twenty out of 35 seats in the Colorado Senate were up for election and the primary was held on June 26, 2012. Prior to the election, 20 seats were held by Democrats and 15 seats were held by Republicans. This was the first election following the redistricting of Colorado's legislative seats in 2011. The general election saw neither party lose nor gain any seats, meaning that the Democrats retained their majority in the State Senate.
Predictions SourceRankingAs of Governing | October 24, 2012
Retirements Democrats District 14: Bob Bacon was term-limited. District 17: Brandon Shaffer was term-limited. District 21: Betty Boyd was term-limited. District 30: Suzanne Williams was term-limited. District 35: Joyce Foster retired.
Republicans District 7: Shawn Mitchell was term-limited. District 12: Keith King retired. District 22: Tim Neville retired. District 27: Nancy Spence was term-limited.
Defeated incumbents Primary Republicans District 8: Jean White lost renomination to Randy Baumgardner.
Closest races Seats where the margin of victory was under 10%:
(gain) (gain)
Results District 4
District 8
District 10
District 12
District 14
District 17
District 18
District 19
District 21
District 22
District 23
District 25
District 26
District 27
District 28
District 29
District 31
District 32
District 33
District 35
References