Tens of thousands of Pennsylvanians are voting for the first time Tuesday and most of them are young people.

One of the busiest polling places was in North Philadelphia. It was one of five places where registered voters who are students at Temple University may vote.

Poll workers at Dendy Recreation Center were seeing young voters by the hundreds. Those NBC 10 spoke to said most were supporters of Sen. Barack Obama.

Arielle Johnson, a first-time voter, is among the hundreds of thousands across Pennsylvania who registered to vote in the primary.

"My parents are very active with voting and all that stuff so I get it from them. It's very important to me. It's my first time voting and for president so I'm very excited," Johnson said.

Many people were making sure fellow students knew where to vote.

"We've been handing out fliers all day, working with our Get Out the Vote program the last few days, making sure students know their rights with voting and where to go to vote. And not necessarily telling them who to support but we are pushing for Senator Obama," Kevin Maggio, an Obama supporter, said.

In Bryn Mawr, students attending college on the Main Line received tips on the primary and delegate selection process before they entered a booth. Most said they knew who they were voting for before Tuesday.

"I think it's important to educate yourself and make an informed decision because these people are going to be representing us for the next four years," Alisa Snyder, a Clinton supporter, said. "I voted for Hillary."

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One Bryn Mawr college student learned a hard lesson Tuesday. The first-time voter broke down when she discovered she wasn't a registered Democrat.

"Now I can't vote for him," Vijaya Thakur sobbed.

"I was really excited to vote for Obama and had been working so hard and everything that I just can't believe that now I don't get to vote," Thakur said.

In Wynnfield, the youngest Obama supporters weren't swaying Jerry Spadara. The member of Saint Joes Republicans said after voting his mission is to drum up support for Sen. John McCain.

"He knows what to expect in Washington and he knows how to work within the system to get things done," Spadara said.