Democrats are defending the narrowest of Senate majorities in 2022 as Republicans look to fight their way back into power after a series of crushing defeats. While Democrats are going on offense in a handful of states where GOP incumbents are retiring, the party is also facing strong national headwinds in their bid to hold onto the Senate. The party of a new president – in this case President Biden – almost always loses ground in Congress in midterm elections. Given Democrats’ slim Senate majority, control of the upper chamber is likely to come down to just a handful of...