Eliza Collins

USA TODAY

Hillary Clinton leads in Pennsylvania and Ohio and is in a virtual tie with Donald Trump in Florida in a Quinnipiac poll of swing states released Tuesday.

In two-way matchups, Clinton was ahead of Trump in all three states — though her 1-point lead in Florida is within the margin of error. In Florida, Clinton led 46%-45%, in Ohio she led 49%-45%, and in Pennsylvania she was up 10 points: 52%-42%.

When third-party candidates are included in the race in Florida, Clinton and Trump were tied at 43%. Libertarian candidate Gary Johnson had the support of 7% of likely voters in the state and Green Party candidate Jill Stein had 3%.

In Ohio, Clinton was just 2 points ahead of Trump 44%-42% (also within the margin of error), Johnson had the support of 8% of those surveyed, and Stein had 3%.

Even with third-party candidates added in Pennsylvania, Clinton still had a hefty lead over Trump, 48%-39%. Johnson had the support of 7% of those surveyed and Stein had 3%.

The telephone poll July 30-Aug. 7 surveyed 1,056 likely Florida voters with a margin of error of plus or minus 3 points. The poll in Ohio included 812 likely voters with a margin of error of plus or minus 3.4 points, and in Pennsylvania the poll included 815 likely voters with a margin of error of plus or minus 3.4 percentage points.

A NBC News/Wall Street Journal poll released Tuesday evening also had Clinton ahead in Ohio and far ahead in Pennsylvania. The survey also found she led Trump in Iowa.

In a matchup between the two in Iowa, Clinton was ahead 41%-37% among registered voters. She also had the lead in Ohio, 43%-38%. And like the Quinnipiac poll, Clinton had a strong lead in Pennsylvania, 48%-37%.

However, Clinton and Trump tied in Iowa when Johnson and Stein were added into the race, with 35% each. Johnson hit double digits in Iowa with 12% and Stein had 6% in the state.

Clinton had the support of 39% of registered voters in Ohio, while Trump had 35%. Johnson again hit 12% and Stein had 4%.

And in Pennsylvania, Clinton was at 45%, Trump 36%, Johnson 9% and Stein 3%.

The poll was conducted Aug. 3-7 of 899 registered voters in Iowa with a margin of error of plus or minus 3.3 points. In Ohio, the poll included 889 registered voters, also with a plus or minus 3.3-point margin of error. The Pennsylvania poll included 834 registered voters and had a margin of error of plus or minus 3.4 points.

In new national poll, Clinton gains and Trump drops