MICHIGAN (WKZO)  --  Tuesday is a primary election day in Michigan. It is sort of the preliminary heat in the election process. The winners will go on to the finals in November. In some races, this will be the final if there is no candidate in the opposing party on the ballot.

Voters have to decide whether they want to vote as a democrat or a republican, you can’t cross party lines, like you can in a general election.

If you do it will void your ballot.

Republicans will choose between Pete Hoekstra, Clark Durant or Randy Hekman, to run against incumbent Senator Debbie Stabenow.

Locally Cong. Fred Upton faces a second challenge from Republican Jack Hoogendyk for his spot as the Republican party’s 6th District nominee.

There are also a few Kalamazoo County Board and township nominations up for grabs at the polls on Tuesday.