Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE trails three top Republican presidential candidates in matchups in three key swing states — Iowa, Colorado and Virginia — a new Quinnipiac poll finds.

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The Democratic presidential frontrunner is already slipping in favorability ratings and is now behind in those states when facing former Florida Gov. Jeb Bush, Sen. Marco Rubio and Wiconsin Gov. Scott Walker. The GOP candidates lead Clinton outright in six of those matchups, while Clinton is still behind in the other three but within the margin of error.

In Iowa, Rubio and Walker both hold an 8-percentage point lead over Clinton, while Bush would defeat her in the hypothetical matchup by 6 points.

In Colorado, Walker holds the largest lead over Clinton at 9 percentage points. Rubio follows shortly behind with an 8-point margin, while Bush leads by 5 percentage points.

Clinton’s margins are much closer in Virginia, but she’s still on the losing side of all three hypothetical contests. Bush and Walker lead her by 3 points, while Rubio leads by 2. All of those results are about within the margin of error of 2.8 percent.

Sen. Bernie Sanders (I-Vt.) polls about as well as Clinton, if not better in some of the general election matchups in Iowa and Colorado, despite trailing the former secretary of State significantly in polls for the Democratic nomination. Vice President Joe Biden, who has not publicly announced a decision on 2016, matches up slightly worse than Clinton.

The results show a drop off for Clinton, who previously led five of these hypothetical matchups in a Quinnipiac poll from April.

The poll also finds that her favorability among the general electorate has dipped since April. She’s down by 23 percentage points in Iowa, 21 points in Colorado and 9 points in Virginia.

A majority of voters believes that Clinton is not honest and trustworthy and does not care about their needs. But most also say she has strong leadership qualities.

The title of worst favorability rating among the entire presidential field, Democrat and Republican, goes to Donald Trump. His favorability is down by 25 percentage points in Iowa, 27 points in Colorado and 31 points in Virginia.

About 1,200 general election voters in Colorado, Iowa and Virginia were surveyed in the poll.