SCRANTON, PA - AUGUST 15: Hillary Clinton supporters listen to the Democratic Presidential candidate give her speech at a rally with Vice President Joe Biden at Riverfront Sports athletic facility on August 15, 2016 in Scranton, Pennsylvania. Clinton focused her speech on the economy and bringing jobs to the key swing state of Pennsylvania. She also talked about her roots in Scranton, her father's home town. (Photo by Mark Makela/Getty Images)

SCRANTON, PA - AUGUST 15: A Hillary Clinton supporter hands the Democratic Presidential candidate an autographed photograph of Bill Clinton a rally with Vice President Joe Biden at Riverfront Sports athletic facility on August 15, 2016 in Scranton, Pennsylvania. Clinton focused her speech on the economy and bringing jobs to the key swing state of Pennsylvania. She also talked about her roots in Scranton, her father's home town. (Photo by Mark Makela/Getty Images)

SCRANTON, PA - AUGUST 15: NBC television journalist Andrea Mitchell asks Vice President Joe Biden a question after a rally with Democratic Presidential nominee Hillary Clinton at Riverfront Sports athletic facility on August 15, 2016 in Scranton, Pennsylvania. The event was Biden's first with Clinton on the campaign trail. Clinton focused her speech on the economy and bringing jobs to the key swing state of Pennsylvania. (Photo by Mark Makela/Getty Images)

SCRANTON, PA - AUGUST 15: Vice President Joe Biden speaks at a rally with Democratic Presidential nominee Hillary Clinton at Riverfront Sports athletic facility on August 15, 2016 in Scranton, Pennsylvania. The event was Biden's first with Clinton on the campaign trail. Clinton focused her speech on the economy and bringing jobs to the key swing state of Pennsylvania. (Photo by Mark Makela/Getty Images)

SCRANTON, PA - AUGUST 15: Vice President Joe Biden speaks at a rally with Democratic Presidential nominee Hillary Clinton at Riverfront Sports athletic facility on August 15, 2016 in Scranton, Pennsylvania. The event was Biden's first with Clinton on the campaign trail. Clinton focused her speech on the economy and bringing jobs to the key swing state of Pennsylvania. (Photo by Mark Makela/Getty Images)

SCRANTON, PA - AUGUST 15: Vice President Joe Biden appears at a rally with Democratic Presidential nominee Hillary Clinton at Riverfront Sports athletic facility on August 15, 2016 in Scranton, Pennsylvania. The event was Biden's first with Clinton on the campaign trail. Clinton focused her speech on the economy and bringing jobs to the key swing state of Pennsylvania. (Photo by Mark Makela/Getty Images)

SCRANTON, PA - AUGUST 15: Vice President Joe Biden speaks at a rally with Democratic Presidential nominee Hillary Clinton at Riverfront Sports athletic facility on August 15, 2016 in Scranton, Pennsylvania. The event was Biden's first with Clinton on the campaign trail. Clinton focused her speech on the economy and bringing jobs to the key swing state of Pennsylvania. (Photo by Mark Makela/Getty Images)

SCRANTON, PA - AUGUST 15: Vice President Joe Biden speaks at a rally with Democratic Presidential nominee Hillary Clinton at Riverfront Sports athletic facility on August 15, 2016 in Scranton, Pennsylvania. The event was Biden's first with Clinton on the campaign trail. Clinton focused her speech on the economy and bringing jobs to the key swing state of Pennsylvania. (Photo by Mark Makela/Getty Images)