Rows of chairs sat empty at the Denver Elections Division Tuesday morning, waiting for voters as a handful who were already present cast their ballots. In back rooms, election judges organized yellow envelops and checked signatures.

It’s Election Day in Colorado, and there are contests in all but six of the state’s 64 counties.

Voters across the state are deciding a host of topics, from the contentious school board races in Denver and Douglas counties, to Greeley City Council seats and a Broomfield ballot question that would give the municipality the power to more heavily vet oil and gas drilling proposals.

Turnout this cycle has been low.

As of 7:46 a.m. Tuesday, 869,247 of the 3,243,593 ballots mailed to voters have been returned.

The Denver Elections Division, located at Bannock Street and West 14th Avenue, was experiencing a lull in the morning but election division spokesman Alton Dillard said there are typically rushes of voters over the lunch hour and after work.

The first vote counts will be released just after the polls close at 7 p.m., with updates arriving about every 90 minutes, he said.

The Denver Post will be covering the action throughout the day (and beyond), but here is what you need to know right now:

Voting

All ballots have to be cast — including through drop off — by 7 p.m. tonight. We have a great look at what to do if you’re a last minute voter here.

If you are in line to vote by 7 p.m., stay there because you’ll still be able to vote. Any later, though, and you will be out of luck.

And don’t even think about mailing your ballot back in at this point — it won’t be counted. Officials recommended getting ballots in the mail by Halloween.

The issues, at a glance

Denver Post coverage

The Denver Post politics team will be following a host of races. In Denver, results will start rolling in at 7 p.m. when polls close.

Follow our coverage at DenverPost.com, and on Facebook and Twitter at facebook.com/denverpolitics and @denverpolitics.

This is a developing story that will be updated throughout the day. Staff reporter Danika Worthington contributed to this report.