Minnesota holds its 2012 caucus Tuesday night, an influential but non-binding vote on 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.

Minnesota has 40 delegates up for grabs. Although no delegates will be selected Tuesday night to go to the August convention, the results will be an indicator of who's most popular in the state.

According to a Public Policy Polling survey published Tuesday morning, Santorum leads with 33 percent in the North Star State. Romney follows at 24 percent, then Newt Gingrich at 22 percent and Rep. Ron Paul at 20 percent.

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

When to Watch

The Minnesota caucuses begin 7:00 p.m. local time (8:00 p.m. ET).  Meetings will last about an hour and a half and the results will start rolling in as the night goes on.

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 live streaming its coverage on live.cnn.com at about 7:00 p.m. ET.

You can also tune into The New York Times' live blog at http://thecaucus.blogs.nytimes.com 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/minnesota. For a more local angle, AOL's local Patch will also host a live blog and discussion.

The Washington Post also has a Minnesota caucuses tracker for county-by-county results.

Follow on Social Media

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

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