All Eyes on Key Midterm Primaries in Wisconsin and Minnesota

Voters are heading to the polls in another round of competitive primary races in the build-up to November’s midterm elections. In Wisconsin and Minnesota, Democrats will once again decide between moderate and progressive candidates. Meanwhile, in South Carolina, Republicans will pick a replacement nominee for the late

Voters in five states are gearing up for another big primary day on Tuesday. Connecticut, Vermont, Minnesota and Wisconsin are holding elections for state and federal offices while South Carolina is having a special primary for late Sen. Lindsey Graham's open Senate seat. CBS News' Mark Strassmann, Jonah Kaplan and Ta