New CBS News Battleground Tracker polling find Sen. Jon Tester (D-MT) is up two points with likely voters over Matt Rosendale (R), 47% to 45% in Montana, while in Missouri, Sen. Claire McCaskill (D-MO) and Josh Hawley (R) are even in support among likely voters at 45% to 45%.
Most supporters of all these candidates describe themselves as enthusiastic about voting this year.

