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Upcoming Election

The June 26, 2018 Primary Election will determine which candidates for the Democratic and Republican Parties will appear on the November 6 General Election ballot to vie for county, state and congressional seats.  No minor parties are holding a primary election. 


Ballots will be mailed to active registered voters who are Unaffiliated or affiliated with the Democratic and Republican Party.


It is the first time that Unaffiliated voters will be eligible to vote in a Primary Election in Colorado. This is because voters approved Proposition 108 in 2016. Unaffiliated voters will receive both the Democratic and Republican primary ballots, unless they declare a ballot preference in advance. Unaffiliated voters may vote and return only one of the ballots and should shred/discard the other. If you cast two ballots, none will count.


See Frequently Asked Questions and Important Dates



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Primary ballots will be mailed to active registered voters who are Unaffiliated or affiliated with the Democratic or Republican parties. No minor parties will participate in the Primary Election.

Visit to check that your voter registration is active and your mailing address is current. Ballots are not forwarded by the Postal Service. In order to receive a Primary Election ballot by mail, you must register to vote by June 18. 

If you are currently affiliated and wish to vote in a different party's primary election, you may change parties or become unaffiliated until May 29. After this date, it is too late to request another party's ballot.

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Ballots will be mailed beginning June 4 to active registered voters who are either affiliated with the Democratic or Republican Party, or who are Unaffiliated. No minor parties are holding a primary election. 

If you do not receive your mail ballot, please update your voter registration at by Monday, June 18 and one will be mailed to your new address. Ballots cannot be forwarded by the Postal Service.

After June 18, ballots are not mailed and you must to go to a Voter Service and Polling Center in order to update your registration and request a ballot.

Read all instructions with your ballot. Mark your choices by filling in the ovals with a black or blue pen. Follow the instructions to prepare and sign your return envelope. 

Unaffiliated voters will receive the ballots for the Democratic and Republican parties, unless they have declared a ballot preference for a specific party. You may vote and return only one of the ballots, and you should shred and discard the second, unvoted ballot. If you return more than one party’s ballot, your vote will not be counted.

Return your ballot by mail with paid postage, or deliver it to any one of our ballot box locations. Ballots must be received Arapahoe County by 7 p.m. on Election Day, June 26 to be counted. Postmarks do not count as received.

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Track your ballot online with Ballot Track. You also can sign up for text, phone or email messages when your ballot has been mailed to you and received by Arapahoe County.

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Visit a Voter Service and Polling Center between June 18 and June 26 to register to vote, update registration, replace or request a ballot, or vote on an accessible electronic tablet.

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The June 26, 2018 Primary Election will determine which candidates for the Democratic and Republican Parties will appear on the November 6 General Election ballot to vie for county, state and congressional seats. No minor parties are holding a primary election.

See sample ballots and learn about the candidates


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Learn how to run for office in Arapahoe County in 2018.

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Get involved as an adult or student election judge.

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Observe the election on behalf of a candidate.