Colorado has a primary election on June 28.

No, there won't be any presidential candidates to vote against, but there will be contests of interest.

For local Democrats, that's the district attorney race between Christian Champagne and Ben Lammons. There is no Republican candidate, so the primary winner will be the next DA for La Plata and Archuleta counties.

Republicans will choose among five people who want to challenge current U.S. Sen. Michael Bennet. They also will choose between Congressman Scott Tipton and challenger Alex Beinstein.

You can vote in the primary that corresponds to your political party registration. You will get a ballot in the mail in early June.

If you want to be a troublemaker and vote in the other party's primary, May 31 is the deadline to change your registration to that party. Go to the County Clerk's office in Bayfield Town Hall or Bodo Industrial Park in Durango, or do it online at govotecolorado.com.

If you are registered as unaffiliated, you can change that to a party registration right up to primary day, or by June 20 to receive a mail ballot. I'd advise giving the post office more time than that. I'd also advise returning your ballot in person rather than trusting the PO.

After the primary, you can stay with that party or go back to your regular party or to unaffiliated. As I've mentioned before, being registered with a party creates no obligation to actually vote for that party's candidates in the general election.