What's at stake: The primary election Tuesday includes contested GOP races for governor and U.S. Senate, a DFL contest for state auditor and dozens of regional and local contests.

Where to vote: The Minnesota secretary of state maintains an online tool to find your local polling place at http://pollfinder.sos.state.mn.us/.

Poll hours: Most polling places will be open from 7 a.m. to 8 p.m. Towns with fewer than 500 people can open polls as late as 10 a.m.

How to vote: Registered voters do not need additional identification. New voters, or those who have not voted in at least four years, must bring identification in order to register or re-register. Voters who are new to Minnesota are also encouraged to bring identification.

Important reminder: In primary elections, participants may vote only for candidates from one political party. For instance, voting in both the GOP governor’s race and the DFL state auditor race would invalidate a ballot.

StarTribune.com will have the latest results after 8 p.m. Tuesday.