Battleground State Polls Show Tight Races Between Trump and Clinton

Quinnipiac polls show races in four key battleground states are close.

However, a win for Clinton in Ohio, Florida or North Carolina would likely seal a victory for her campaign.

Clinton's slight decline in Ohio and larger decline in Pennsylvania show classic signs of a fading post-convention bounce. Democratic voters in both states seem to be softening a bit from last month. And Clinton's advantage among women, especially white women, is shrinking in Pennsylvania while Trump's lead among men in Ohio is climbing.

North Carolina presents a unique challenge for Trump. Although he leads by more than 20 percentage points among military households in Florida, Ohio and Pennsylvania, he runs neck and neck with Clinton among the large military population in North Carolina.

The poll shows almost no gender gap among Republicans and Democrats, but a wide split by gender among independents.