Trump, who was 3-to-1 to be the next United States president, is now 5-to-1 and the third betting choice behind Hillary Clinton at -125 and Marco Rubio at 9-to-4. Iowa Caucus winner Ted Cruz has jumped to 12-to-1.
On the Democratic side, Clinton edged Bernie Sanders by a margin nearly too close to call. She is still a -550 favorite to win the nomination and -125 to win the election.
Oddsmakers do expect Trump to bounce back in New Hampshire on Feb. 9, making him the favorite at about -190.
Odds to win U.S. presidential election
Hillary Clinton -125 Marco Rubio 9-4 Donald Trump 5-1 Bernie Sanders 6-1 Ted Cruz 12-1 Michael Bloomberg 33-1 Jeb Bush 33-1 Chris Christie 66-1 Mitt Romney 80-1
Republican nomination
Marco Rubio -160 Donald Trump 3-1 Ted Cruz 5-1 Jeb Bush 16-1 Chris Christie 50-1 John Kasich 50-1
Democratic nomination
Hillary Clinton -550 Bernie Sanders 7-2 Joe Biden 18-1
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