Washington, Nov 4 (IANS): Democratic nominee Hillary Clinton will close her campaign with a top flight of surrogates, her political equivalent of assembling "The Avengers" on Novermber 7, a day before the presidential election.

President Barack Obama, former President Bill Clinton, First lady Michelle Obama and Chelsea Clinton will headline what will be her final rally togetherin Philadelphia, an aide said on Thursday.

The rally, which is expected to be one of Clinton's biggest of the campaign, acknowledges the importance of Pennsylvania -- and the Philadelphia area -- to Clinton's campaign, CNN reported.

Clinton has spent seven days campaigning in Pennsylvania since July's Democratic National Convention and aides feel a win in Pennsylvania will severely limit Trump's path to the presidency. The key for Clinton is to boost turnout in Philadelphia, especially among African-American voters, and in city's surrounding suburbs.

Clinton will also campaign in Pittsburgh on Friday and Philadelphia on Saturday night.

Tim Kaine, Clinton's vice presidential nominee, will be campaigning elsewhere, the aide said.

The aide said the November 7 event would not necessarily be Clinton's final event, but it was unlikely that Clinton will hold a rally on Election Day.

Clinton has relied on top Democratic surrogates to turn out voters in swing states across the country.

On Thursday, Clinton campaigned in North Carolina, while the President campaigned in Florida, Bill Clinton rallied voters in Michigan and Nevada, Vermont Senator Bernie Sanders spoke in Ohio and Chelsea Clinton headlined events in Wisconsin.