Senate 2016: Sorting Out the Democrats' Best Targets By Kyle Kondik
Former Sen. Russ Feingold’s (D) long-expected decision to challenge Sen. Ron Johnson (R) in a 2016 rematch crystallized for us that Johnson is the most vulnerable incumbent senator in the country. But it also helped put the other top Senate races into context.
First of all, let’s re-set the scene. Map 1 shows Senate Class 3, which will be contested in November 2016. The 34 seats up next year are lopsidedly controlled by Republicans: They are defending 24 seats, while the Democrats are only defending 10.