Rubio won't commit to serving full six-year Senate term

“No one can make that commitment because you don’t know what the future’s gonna hold in your life personally or politically,” the Florida senator told CNN on Monday, opening the door for a presidential run when asked if he could commit to a full Senate term before seemingly slamming it shut in the next breath.

Rubio, who’s expected to win the primary in his Senate race Tuesday, leads Democrat Patrick Murphy by nearly 6 percentage points in the RealClearPolitics average of state polls. Murphy, a Florida congressman, is favored to prevail in his primary against Rep. Alan Grayson.