FBI: Clinton Foundation Probe a 'Very High Priority'

As Election Day approaches, both presidential campaigns are hoping to make gains with minority and women voters. But there are new worries for Hillary and Bill Clinton as the FBI reportedly expands its investigation of the Clinton Foundation.

Sources told Fox News it's a very high priority.

The FBI is looking into charges of a pay-for-play operation at the foundation, one where wealthy and foreign donors made big donations to the Clinton charity in exchange for access to Hillary Clinton when she was secretary of state.

While Mrs. Clinton may worry about more potentially damaging email leaks from WikiLeaks prior to the election, others are concerned that she isn't getting enough support from black and female voters.

President Barack Obama worries the black vote is not as solid for Clinton as it was for him. Campaigning for Clinton in North Carolina, he urged African-Americans and college students to get out and vote.

"I hate to put a little pressure on you, but the fate of the republic rests on your shoulders," he warned.

The president said if Clinton wins North Carolina, she'll win the election. He reminded voters that he won the state by only 14,000 votes -- just two votes per precinct.

Meanwhile, Donald Trump has gained support in recent days after the FBI reopened its investigation into Clinton emails and one of the latest polls shows Trump picking up some support among women.

An Investor's Business Daily tracking poll shows Trump's support among female voters has jumped five points in the past three days. As of Tuesday, 39 percent of women said they're backing Trump. That compares to 34 percent who supported him on Saturday.

Clinton still has the clear lead among women, but Trump's campaign staff isn't giving up. They're handing out pink signs to female voters attending his rallies.

In Pensacola, Trump said he was trying to stay calm.

"No sidetracks Donald, nice and easy, nice because I've been watching Hillary the last few days she's totally unhinged. We don't want any of that," he insisted.

While Trump campaigned in Florida, Clinton set her sights on the west, hoping to win Arizona. That's something no Democrat has done in more than 20 years.

She made an appeal to Hispanic voters and blasted Trump's immigration policy, asking, "He doesn't really see Latinos even those who have been here nine or 10 generations as fully American, does he?"

With just five days to go now until the election, both candidates will be targeting independent voters and minorities, hoping to get those last few votes that could make the difference between victory, or defeat.