North Carolina – Kay Hagan vs. Thom Tillis

Arkansas – Mark Pryor vs. Tom Cotton

Colorado – Mark Udall vs. Cory Gardner

Colorado Senator Mark Udall and his challenger, Representative Cory Gardner (photo The Denver Post)

Georgia – Michelle Nunn vs. David Perdue

Iowa – Joni Ernst vs. Bruce Braley

Kansas – Greg Orman vs. Pat Roberts

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