National and swing state polls have tightened over the last few weeks as Hillary Clinton's email scandal continues to plague her, and Donald Trump has remained on message and on the attack.

Clinton has been dealing with a serious problem maintaining her lead with the Obama coalition of non-white voters. Recent polling in both swing states and nationally suggest she's beginning to slump with minority voters.

According to the Quinnipiac polls released on Thursday in Florida, Ohio, and Pennsylvania, Clinton has lost ground with non-whites in these states.

While Clinton had a very small (2 percent) loss in Florida, which was within the margin of error; the Democratic nominee suffered a tremendous loss of non-white votes in Ohio and Pennsylvania.

Clinton lost 18 points among non-white voters in Ohio, standing at just 62 percent in a state that Obama won more than 90 percent. Clinton's lead in Pennsylvania also dropped by 9 points, down to 70 percent in another state that Obama dominated in the high 80s.

Another Florida poll by PPP had similar results. In a four-way contest, Clinton has lost four percent of her support among black voters since June -- many of whom have moved on to support Libertarian Gary Johnson.

Clinton's lead among Hispanics in Florida also shrank, from 31 percent in June to 25 percent in September.

National polling has painted a similar picture, the Economist/YouGov poll showed Clinton's lead among black and Hispanic voters dipped by 5 and 9 percent from the week before.

Both Rasmussen Reports and a Boston Herald poll reported that Clinton's support among black voters nationally had to dipped to 63 and 73 percent, respectively.

Couple these polling results with the recent news that young black voters are not enthusiastic about Clinton, and you have a situation that could be detrimental for the Democratic Party.