BALTIMORE (CBS/WJZ)-- Hillary Clinton and Donald Trump are spending the last hours before the polls open to reach as many voters as they can in key states.

Some of the biggest stars in politics and pop culture joined Hillary Clinton at Independence Hall for a last-minute push for votes in the battleground state of Pennsylvania.

"America's best days are ahead of us, if reach for them together," said Clinton.

Clinton will hold another star-studded rally at midnight in North Carolina where she is tied with Donald Trump.

Trump also campaigned in Raleigh.

"Now it's up to american people," said Trump.

He needs the state's electoral votes to help him win the White House.

Trump's final-day tour of five battleground states, ends Monday in Michigan with running mate Mike Pence.

"We are just one day away for change waiting for your entire life," said Trump.

Clinton has an advantage in the electoral college, thanks to reliably democratic states, something Trump would need to overcome.

"What he's got to do is flip places like Florida for himself, like Ohio, and then also not just North Carolina, but also one of those reliably blue states," said Anthony Salvanto, CBS News elections director.

We'll know how some of those states will go when the polls start closing at 7 p-m Tuesday.

Both presidential candidates will watch the election night returns in New York City.

MARYLAND U.S. SENATE RACE 

The two main candidates running for U.S. Senate did all they could do to get your votes.

Senator Barbara Mikulski is retiring from the U.S. Senate after three decades.

Supporters packed a union hall in Southwest Baltimore rooting for the entire ticket, which includes Congressman Chris Van Hollen.

He's asking Maryland voters to higher him for the U.S. senate.

"I am one of those people who have worked across party lines to get things done, and the last thing we need are more people like the tea party who are not interested in moving the country forward but are interested more in politics," said Van Hollen.

"People are excited about the elections and we are too!" said Republican Kathy Szeliga.

State Delegate Kathy Szeliga traversed the district all day Monday as her supporters tried to persuade voters Maryland needs a female senator.

"As we make laws, it's really important that women's views and positions are at the table in the U.S. Senate and the congress," said Szeliga.

"We are feeling good, a lot of momentum, but you take nothing for granted. You want to run across the finish line," said Van Hollen.

"It's time to change Washington, and you're only going to do that by sending new people to Washington," said Szeliga.

Both candidates have been endorsed by two popular politicians. Senator Mikulski has endorsed Chris Van Hollen and governor Larry Hogan has endorsed Kathy Szeliga.

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