Democratic presidential nominee Hillary Clinton jumped to a huge lead over Republican nominee Donald Trump in Pennsylvania, according to a new poll released Wednesday.

Clinton leads Trump by 13 percentage points among registered voters — 48 percent to 35 percent, according to the Franklin & Marshall College poll. Her lead narrows to 11 points — 49 percent to 38 percent — when the poll counts only likely voters.

In the U.S. Senate race, Democratic nominee Katie McGinty leads Republican U.S. Sen. Pat Toomey by 38 percent to 30 percent among registered voters, but the lead shrunk to one point, 39 to 38 percent, among likely voters.

The F&M poll reflects findings similar to one last week during the Democratic National Convention by Suffolk University in Boston, which had Clinton up 9 points (50 percent to 41 percent) among likely voters in the Keystone state. A poll last weekend by Public Policy Polling, a Democratic-leaning pollster, had Clinton up only 4 points (49 percent to 45 percent).

Clinton's lead holds at 13 points (47 percent to 34 percent) even when voters are asked their preference with Libertarian presidential nominee Gary Johnson and presumptive Green nominee Jill Stein specifically included in the question.

Conducted between Friday, the day after the Democratic convention ended, and Monday, the poll surveyed 661 registered voters with a margin of error of plus or minus 4.8 points. The margin of error for the 389 likely voters sampled is plus or minus 6.3 points.

G. Terry Madonna, Ph.D., the poll director and political analyst, said the poll picked up Clinton's convention "bump," voter feelings about Trump's sarcastic invitation to Russia to hack her email and the controversy he stirred criticizing the parents of a Muslim-American Army soldier killed in the Iraq war.

"I don't think there's any doubt," Madonna said. "These are largely moments that he brought on himself. It's not like they attacked him … He gets himself in these needless controversies and it's tilting the election to her. Let me add quickly that in this weirdest, most unpredictable presidential election in modern history, who knows if the pendulum swings back."

The shift is similar to Trump's gains last month after the Republican convention and the release of an FBI report criticizing Clinton as "extremely careless" for using a private email server as secretary of state. For a while, Trump led national polls, though Clinton leads in most recent polls.

"He's got to figure out a way to get back on message, and hope that this isn't a defining moment in the campaign," Madonna said. "The other point I would make is this is not a primary. This is a general election. The electorate that he's trying to reach is different … You've got to broaden your base."

F&M previously did not ask voters about a head-to-head matchup between Clinton and Trump, though the poll asked about how favorably each is viewed.

Both are seen more favorably than they were in a March F&M poll.

Back then, 42 percent of voters viewed Clinton strongly or somewhat favorably and 53 percent strongly or somewhat unfavorably. In the latest poll, her favorability rose to 47 percent while her unfavorability dropped to 49 percent.

Trump, viewed favorably by 27 percent in March, was at 33 percent in the latest poll with his unfavorability dropping from 65 percent to 62 percent.

Clinton appeared to benefit more from the Democratic convention than Trump did from the Republican convention. More than three in five voters (62 percent) who watched the convention said they would be more likely to vote for Clinton while two in five (40 percent) said that about Trump after the Republican convention.

She was also more popular among Democrats (78 percent support her) than he was among Republicans (69 percent support him).

In the Senate race, it's clear television commercials praising or attacking the candidates affected voters.

In March, about one in six voters (16 percent) had a favorable view of McGinty and one in 20 (5 percent) had an unfavorable view. In the latest poll, one in four voters (25 percent) viewed her favorably and the same percentage viewed her unfavorably.

Toomey's favorability rating dropped from three in 10 voters (30 percent) to more than two in 10 (23 percent). His unfavorability rating rose from more than one in three voters (35 percent) to two in five voters (40 percent). Large numbers of voters remain undecided or don't know what to think (49 percent McGinty, 36 percent Toomey), meaning both candidates have room to improve their standing.

Madonna said McGinty's larger lead among registered voters seems to reflect a difference in how closely they follow the election. Registered voters seem to pay less attention and appear likelier to vote along party lines so McGinty's lead among them is larger, Madonna said. Likely voters pay closer attention and are less likely to vote along party lines, which is why Toomey does better among them than Trump, he said. McGinty's standing in the polls also appears to rise and fall with how well Clinton does, Madonna said.

bkrawczeniuk@timesshamrock.com