WASHINGTON: Hillary Clinton leads Donald Trump across the board in a new poll of key battleground American states, US media reported today.

According to Ballotpedia's battleground poll, Clinton, the presumptive Democratic nominee, leads Trump 51 per cent to 37 per cent in Florida, 45 per cent to 41 per cent in Iowa, 50 per cent to 33 per cent in Michigan, 48 per cent to 38 per cent in North Carolina.

In Ohio, the 68-year-old former secretary of state is leading over her Republican presumptive nominee by 46 per cent to 37 per cent, 49 per cent to 35 per cent in Pennsylvania and 45 per cent to 38 per cent in Virginia, it said.

Her leads held at nearly the same margins when Libertarian Party nominee Gary Johnson was included in the poll.

Clinton led Trump 48 per cent to 37 per cent when all states were factored together. With Johnson included, Clinton led Trump 44 per cent to 34 per cent, with Johnson at 13 per cent.

Amid long-shot efforts by a handful of delegates to name someone other than 70-year-old real estate billionaire Trump as the Republican party nominee, Ballotpedia also polled Clinton against Ohio Governor John Kasich and House Speaker Paul Ryan.

Kasich had a slight lead on Clinton and Ryan polled neck- and-neck.

Separate polling in three battleground states, conducted by Quinnipiac University, found a much tighter race: Clinton up eight points in Florida, but only one point in Pennsylvania and a tie in Ohio, CNN reported.

Each of the seven states surveyed is seen as a swing state where either party is normally seen as relatively competitive in presidential elections, though Michigan has gone Democratic in most recent presidential elections.

Ballotpedia surveyed roughly 600 voters in each of the states between June 10-22 for the poll and each survey has a margin of error of plus or minus four percentage points.

A Quinnipiac University national poll released today shows Hillary Clinton leading Trump by just two points, 42 per cent to 40 per cent, a much closer race than other recent surveys have shown.

With third-party candidates included, Clinton leads 39 per cent to 37 per cent, with Libertarian Party nominee Gary Johnson at eight per cent and Green Party candidate Jill Stein at four per cent.

This Quinnipiac poll is quite different from other recent surveys on the presidential race, showing a much tighter contest than others. Its field period overlaps with those of the Washington Post/ABC News and NBC News /Wall Street Journal polls released Sunday, both of which found Clinton significantly ahead of Trump, the report said.

Read Also:
Clinton Aide Abedin: Not Aware Of Any Email Deletions By Boss
Obama, Biden To Campaign For Clinto