Precinct caucuses are taking place Tuesday night across Minnesota. They’re the first step for political parties building their platforms as they choose delegates to endorsing conventions later this year where they will choose candidates for governor, Congress, the Minnesota Legislature and other elected offices. Minnesota Secretary of State Mark Ritchie says that all of the parties — Constitution Party, Libertarian, the Independence, the Greens — and the large parties — the Democratic and Republican parties — have various caucuses at various places and times, and all of that information is one place at www.mnvotes.org. You can also contact your local county auditor’s office. Caucuses begin at 7pm across the state Tuesday.