Democratic presidential candidate Hillary Clinton is running behind three top Republican presidential candidates in Colorado, according to a swing-state poll released this week by Quinnipiac University.

U.S. Sen. Marco Rubio of Florida leads Clinton 46-38 points among Colorado voters, former Florida Gov. Jeb Bush leads 41-36, and Wisconsin Gov. Scott Walker is ahead 47-38 percent.

The poll was conducted by Quinnipiac in Colorado, Iowa and Virginia, with similar results in the two other swing states.

Clinton’s numbers in Colorado have slipped since the last time the outfit polled the state, when she was ahead in the match-ups.

Republican presidential contender Donald Trump has the worst favorability ratings of any candidate polled, with 58 percent of respondents saying they viewed the blustery New York billionaire negatively.

But Clinton has a problem with Colorado voters who don’t believe she’s honest and trustworthy, by 62-34 percent. A majority, 52-46 percent says she has strong leadership qualities. By 48-40 percent, voters say Clinton doesn’t care about their needs and problems.

“Hillary Clinton’s numbers on honesty and trust may border on abysmal, but Wisconsin Gov. Scott Walker, the GOP frontrunner, is still battling a name recognition handicap,” said Tim Malloy, assistant director of the Quinnipiac University Poll. “Do Colorado voters trust Hillary? No, they do not. Do they think she cares about their needs? No they do not. So the door is open to a GOP candidate voters can believe in.”

In an issues poll also conducted by Quinnipiac, Colorado voters say they support same-sex marriage 59-33 percent and support the U.S. Supreme Court’s decision legalizing same-sex marriage in all 50 states by 57-38 percent. By a wider 61-34 percent, Coloradans oppose a constitutional amendment allowing states to ban same-sex marriage.

Quinnipiac surveyed 1,231 Colorado voters from July 9 to 20. The poll has a margin of error of plus-or-minus 2.8 percentage points

– ernest@coloradostatesman.com