WASHINGTON -- A new poll of Pennsylvania voters found Democrat Hillary Clinton opening up a 10 percentage point lead over Republican Donald Trump, but a dead heat in the state's critical U.S. Senate race between Republican incumbent Pat Toomey and Democrat Katie McGinty.

The Monmouth University Poll released Tuesday found Clinton with 50 percent support among likely Pennsylvania voters compared to 40 percent for Trump, 5 percent for Libertarian Gary Johnson and 2 percent for the Green Party's Jill Stein. That's similar to the 8 point lead Monmouth found for Clinton in late August, and suggests little impact from what many saw as a disastrous last week for Trump.

But in the Senate race the poll found Toomey and McGinty each garnering 46 percent support, the poll found. In August the survey had McGinty with a 4 percentage point lead.

The poll, conducted from Sept. 30 to Oct. 3, surveyed 402 likely Pennsylvania voters and has a margin of error of 4.9 percentage points. It comes as the campaigns enter their final five weeks and both the Clinton and Trump camps blitz Pennsylvania, a state increasingly seen as pivotal in the contests for control of the White House and Senate.

Both sides are making pushes to register voters ahead of the Keystone State's Oct. 11 deadline, and independent groups are flooding the airwaves in the Senate contest, making it the most expensive Senate race in the country.

Clinton has made sharp gains with white women, the poll found. Her support among that group grew from 46 percent in August to 55 percent in the latest survey. Trump leads among white men, 57-35, though his margin with that group was 18 in August.

"Clinton has been blanketing the Pennsylvania airwaves with ads that highlight Trump's controversial statements, particularly about women. They appear to have had an impact," said Patrick Murray, director of the Monmouth University Polling Institute.

While other polls show Toomey running roughly even with Trump, this one shows him pulling ahead of the GOP standard bearer -- something that could cheer his allies, who fear a drag from the top of the GOP ticket.

The Monmouth survey, however, stands in contrast to another poll out Tuesday from Franklin & Marshall College, which found McGinty leading Toomey 41-35 among likely voters, and the incumbent running slightly behind Trump. The Franklin & Marshall poll had Clinton leading by 9 percentage points, similar to Monmouth in that race.

Toomey's attacks accusing McGinty of wanting to raise taxes appears to be taking a toll, according to Monmouth: 45 percent of those surveyed said he would do a good job on taxes, against 38 percent who believe she would do well on that issue. McGinty recently released a TV ad saying she would oppose tax hikes on the middle class.

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