Source: ROLL CALL, 5/5/20


With Election Day six months away, senators facing well-funded challengers from their own parties and the late entry of a game-changing candidate have shaken up CQ Roll Call’s list of the 10 most vulnerable Senate incumbents. Both appointed Georgia Republican Kelly Loeffler and Massachusetts Democrat Edward J. Markey make the list because of challenges from House colleagues. Montana GOP Sen. Steve Daines joins them because Democratic Gov. Steve Bullock jumped into the race after a failed presidential run.

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