Democratic presidential candidate Hillary Clinton speaks on stage during a rally after filing paperwork for the New Hampshire primary at the State House on November 9, 2015 in Concord, New Hampshire.
Which GOP candidates hit Hillary Clinton the hardest?
02:07 - Source: CNN

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Hillary Clinton trails all of her Republican rivals in head-to-heads in Colorado, a new poll shows

Colorado is a key swing state in the presidential election

Washington CNN  — 

Colorado could be big trouble for Hillary Clinton.

The Democratic front-runner in the 2016 presidential race trails all the leading Republican contenders by 11 percentage points or more in the key swing state, a new Quinnipiac University poll shows.

Florida Sen. Marco Rubio bests Clinton 52% to 36%, the biggest gap. Ben Carson wins a potential head-to-head matchup as well, with a 52% to 38% advantage. And Donald Trump leads 48% to 37%.

Tim Malloy, the assistant director of the Quinnipiac University Poll, described it as a “chilly if not frigid reception” in Colorado for Clinton.

In the nominating contest, Colorado’s GOP voters’ preference carries little weight. The party’s caucus doesn’t count because it violates Republican National Committee rules that require states to bind their delegates to the winners of their votes.

Still, Carson is Republican voters’ preference there, with 25% support. He’s trailed by Rubio at 19%, Trump at 17%, Texas Sen. Ted Cruz at 14%, Carly Fiorina at 5%, Kentucky Sen. Rand Paul at 3% and former Florida Gov. Jeb Bush at 2%.

Among Democrats, Clinton has a clear lead with 55% support to Vermont Sen. Bernie Sanders’ 27% and former Maryland Gov. Martin O’Malley’s 2%.

President Barack Obama captured the Centennial State in both 2008 and 2012.

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CORRECTION: An earlier version of this story misstated the percentage of Clinton’s support in Colorado in a general election contest against Rubio. It is 36%.