1/3 of federal senators is the most important election after the presidential. Republicans will gain control of the federal house of representatives, and will go up to 30-31 state governorships as well. Local referendums on gay marriage in left-wing states are very important for the 11/6 election as well. Currently the majority of states ban marriage between the same gender. The measure should pass in Maryland, it's already failed in Maine a few years ago, but it'll go either way this year.