Marco Rubio, Hillary Clinton’s newest competition?

In two hypothetical 2016 matchups, Rubio is the GOP candidate that is the closest to overtaking Clinton in Florida and Pennsylvania. In Ohio, Gov. John Kasich prevails in that head-to-head matchup, according to a new Quinnipiac University poll of swing states.

In the Sunshine State, only 47 percent to 44 percent would support Clinton over Rubio. Another candidate — Jeb Bush, the state’s former governor — only received 42 percent of support compared to Clinton’s 46 percent. Rubio is within the margin of error (plus or minus 3 percentage points), while Bush is within striking distance.

Though Clinton is backed by a slim majority of voters in Florida, Ohio and Pennsylvania compared to Bush, New Jersey Gov. Chris Christie, former Arkansas Gov. Mike Huckabee, Wisconsin Gov. Scott Walker and Texas Sen. Ted Cruz, voters do continue to view her as not trustworthy in those states — by margins of 8 to 14 percentage points.

“[P]erhaps more troubling for her than the continuing slide is how she is perceived by voters who continue to say she is not honest and trustworthy,” Peter A. Brown, assistant director of the Quinnipiac Poll, said.

In Florida for example, 51 percent to 43 percent of voters say she is not honest and trustworthy — compared to 50 percent to 34 percent who say that Rubio is honest and trustworthy.

Ohio is where Clinton does the worst. In addition to trailing Kasich, 47 percent to 40 percent, 53 percent of Ohio voters say that she is not honest. Just 40 percent say she is honest — something 38 percent of them think is a candidate’s top quality. Sixty-one percent said Kasich is honest.

The telephone-based poll was conducted June 4-15, surveying 1,147 Florida voters with a margin of error of plus or minus 3 percentage points, 1,191 Ohio voters with a margin of error of plus or minus 2.8 percentage points and 970 Pennsylvania voters with a margin of error of plus or minus 3.2 percentage points.