No matter what the turnout in today’s primary, it may not settle some early races. It won’t have anything to do with overall voter turnout. Of all those who do vote, 35-percent have to vote for a candidate to give him or her the party’s nomination. And that could fail to happen in a few races, most notably the fifth-district congressional contest in western Iowa, with four candidates. There are nearly a dozen districts where three or more people are on local ballots for state legislative seats, and three republicans are vying to be the challenger to incumbent Governor Tom Vilsack. The two parties have been choosing delegates to go to their conventions a few weeks from now, and any race where nobody gets that 35-percent plurality will be decided by those delegates.