Colorado holds its 2012 caucus Tuesday night, an influential but non-binding vote for the Republican presidential nomination. Former Gov. Mitt Romney, former Sen. Rick Santorum, ex-House Speaker Newt Gingrich and Rep. Ron Paul are all on the ballot.

There are 36 delegates at stake in Colorado, which is holding its contest the same night as Missouri and Minnesota. Although none of those delegates will be designated Tuesday, the caucuses will be an indicator of who is most popular in the Centennial State.

Romney has a strong hand in Colorado, where he won by 60 percent in 2008. According to a Public Policy Polling survey published Tuesday morning, 37 percent of participants favored Romney. Santorum followed with 27 percent, Gingrich with 21 percent, and Rep. Ron Paul with 13 percent.

Below is some advice on how to follow the action tonight:

When to Watch

The Colorado caucuses begin at 7 p.m. local time (9 p.m. EST) and are held throughout the evening. The Colorado GOP expects the meetings to last about an hour and a half, after which results will start rolling in.

Where to Watch

The major networks -- MSNBC, CNN and Fox -- will narrate the caucuses tonight and provide analysis. But in case you're not close to a television, CNN will be stream live coverage on live.cnn.com at about 7 p.m. EST.

You can also tune into The New York Times' live blog at http://elections.nytimes.com/2012/primaries/states/colorado  or The Washington Post's live blog at http://www.washingtonpost.com. The Washington Examiner is reporting the results as they come in at http://campaign2012.washingtonexaminer.com/colorado.

The Washington Post also has a Colorado caucuses primary tracker for results by county.

Follow on Social Media

The hashtags #COpolitics and #COCaucus can be used for up-to-the-minute results on Twitter

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