Voters in Iowa, Montana, New Jersey and New Mexico settled House and Senate primary battles on Tuesday. South Dakota also voted, but there was no contest in either party for its one House seat.
Along with nominating a senator’s son for another term in his father’s old House seat, voters also queued up several November rematches in battleground districts and picked nominees for open seats who are virtually certain to be in the next Congress.
Here are 10 takeaways from the races.
