Democrats will determine their candidates to try to flip Iowa's governor and a Senate seat blue Tuesday as Republicans look to hold open seats.

While Republicans hold an advantage in Iowa, Democrats see openings in an open governor’s and Senate race, and two congressional districts.

Six states — California, Iowa, Montana, New Jersey, South Dakota and New Mexico — hold elections on Tuesday. Here are key races to follow.

Voters will head to the polls in California, Iowa, Montana, New Jersey, New Mexico and South Dakota.

Democrats will determine their candidates to try to flip Iowa's governor and a Senate seat blue Tuesday as Republicans look to hold open seats.

The governor's office in California typically attracts some of the highest-wattage names in politics, but not this year