Sen. Patrick Leahy, who supports Barack Obama, is calling on Sen. Hillary Clinton to quit the presidential race.

As ABC News notes, Leahy told Vermont Public Radio:

There is no way that Senator Clinton is going to win enough delegates to get the nomination. She ought to withdraw and she ought to be backing Senator Obama. Now, obviously that's a decision that only she can make. Frankly I feel that she would have a tremendous career in the Senate.

Leahy added that he's worried that the prolonged Democratic race is playing to John McCain's advantage. "John McCain, who has been making one gaffe after another, is getting a free ride on it because Senator Obama and Senator Clinton have to fight with each other," Leahy said. "I think that her criticism is hurting him more than anything John McCain has said. I think that's unfortunate."