(FiveThirtyEight) Dan Sullivan won the Republican nomination for Senate in Alaska on Tuesday night, finalizing our cast of Democratic and Republican candidates for the most competitive Senate races in November. Republicans, despite some close calls, nominated candidates mostly in the mainstream of the GOP, avoiding the fringe candidates who have hurt the party's electoral prospects in the past.
Republicans look likely to pick up seats in Montana, South Dakota and West Virginia — putting the party within three seats of the majority.
The map right now is simple: Control of the Senate will be decided in Alaska, Arkansas, Colorado, Iowa, Louisiana and North Carolina. Republicans must win at least half of these races.
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