Why Republicans are favored to win the Senate — and how Democrats could stop them

Democrats’ control of the 50-50 Senate could well be washed away by a red wave in this fall’s midterm elections.

Republicans appear favored to win back the Senate for two simple reasons. First, the national environment has moved in their favor. Biden’s approval rating is low. The GOP has improved in generic ballot polls and won the governor’s seat in Virginia last November.

Second, the Senate is already split 50-50, so a net gain of even just one seat for Republicans would flip the chamber into their hands.

However, Democrats do still have a way...