The 2018 Colorado State Senate elections took place as part of the

biennial Biennial means (an event) lasting for two years or occurring every two years. The related term biennium is used in reference to a period of two years. In particular, it can refer to: * Biennial plant, a plant which blooms in its second year and th ...

Colorado Colorado (, other variants) is a state in the Mountain states, Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the wes ...

voters elected state senators in 17 of the 35 districts in the state senate. State senators serve four-year terms in the

Colorado State Senate The Colorado Senate is the upper house of the Colorado General Assembly, the state legislature of the US state of Colorado. It is composed of 35 members elected from single-member districts, with each district having a population of about 123,0 ...

. The Colorado Reapportionment Commission provides a statewide map of the state Senat
here
and individual district maps are available from the U.S. Censu

A primary election on June 26, 2018 determined which candidates appeared on the November 6 general election ballot. Primary election results can be obtained from the Colorado Secretary of State's website. Following the 2016 state Senate elections,

Republicans Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or again ...

maintained effective control of the Senate with 18 members. Democratic state Senator Cheri Jahn switched from Democrat to unaffiliated on December 29, 2017. However, Sen. Jahn decided to still caucus with Democrats. In the 2018 election, Republicans defended 10 seats while Democrats defended 6 seats with Jahn's 1 Independent seat up for grabs. To claim control of the chamber from

, the Democrats needed to net 1 Senate seat while electing a Democrat to the Independent seat. The Democratic candidate won the Independent seat while Democrats netted 2 additional seats, giving the party majority status in the chamber.

Summary of Results

*Districts not shown are not up for election until 2020. Source:

Incumbents not seeking re-election

Term-limited incumbents

Seven incumbent Senators (three Democrats, three Republicans and one Independent) are term-limited and unable to seek a third term. *

Kevin Grantham Kevin Grantham (born June 29, 1970) is an American politician who serves on the county commission of Fremont County, Colorado. He served in the Colorado Senate from the 2nd district as a member of the Republican Party from 2011 to 2019. He serv ...

(R), District 2 * Kent Lambert (R), District 9 *

Kevin Lundberg Kevin Lundberg (born July 29, 1952) is a former legislator in the U.S. state of Colorado. Before his appointment to the State Senate in 2009 as a Republican, he was elected to serve as the Representative to House District 49 in the Colorado Hous ...

(R), District 15 * Cheri Jahn (I), District 20 *

Andy Kerr Andrew Kerr (1878–1969) was an American football coach. Andrew or Andy Kerr may also refer to: * Andrew Kerr (Australian politician) (1837–1907), New South Wales politician * Andrew Kerr (broadcaster), Scottish television presenter and journali ...

(D), District 22 *

Irene Aguilar Dr. Irene Aguilar (born April 5, 1960) is a former Democratic member of the Colorado Senate. She represented the 32nd district from 2011 to early 2019. Her district encompassed part of the city of Denver, Colorado. Personal life and educatio ...

(D) District 32 * Lucia Guzman (D), District 34

Retiring incumbents

One incumbent Democrat is not seeking re-election despite being able to do so. *

Michael Merrifield Michael Merrifield (born 1946/47) is an American politician from Colorado. He served four terms (2002-2010) as a Representative in House District 18. He was chairman of the House Education Committee and also served on the House Transportation a ...

(D), District 11

Closest races

Seats where the margin of victory was under 10%: # #

Detailed Results

Sources:

District 1

District 2

District 3

District 5

District 6

District 7

District 9

District 11

District 13

District 15

District 16

District 20

District 22

District 24

District 30

District 32

District 34

References

{{2018 United States elections

State Senate A state legislature in the United States is the legislative body of any of the 50 U.S. states. The formal name varies from state to state. In 27 states, the legislature is simply called the ''Legislature'' or the ''State Legislature'', whil ...

2018 File:2018 Events Collage.png, From top left, clockwise: The 2018 Winter Olympics opening ceremony in PyeongChang, South Korea; Protests erupt following the Assassination of Jamal Khashoggi; March for Our Lives protests take place across the United ...