NEW POLL: RUBIO DOES BEST VS. HILLARY, 50-42%

Poll: Rubio does best against Clinton in 2016 ballot test

Republicans want a candidate who can beat Hillary Clinton. A new Fox News poll finds Marco Rubio performs best against the presumptive Democratic nominee.

Rubio has an eight-point edge: 50 percent to Clinton's 42 percent.

Rubio not only commands the widest margin against Clinton, he's the only one who hits the 50 percent mark.  Rubio's margin comes entirely from men, who go for him over Clinton by 17 points.  The two are tied among women voters.

This is the first time Rubio has topped Clinton, although it's always been close -- she was up by just one point in June (45 Clinton vs. 44 Rubio).

The poll also finds that GOP primary voters are somewhat more likely to prioritize having a nominee who can beat the Democrat (78 percent "very" important) than someone who is serious about shrinking government (71 percent "very" important).

Also read:

Hillary Has a Serious Problem in the Upper Midwest

How Hillary Clinton Became Obama's Political Prisoner