CHARLOTTE, N.C. -- Supporters of Sens. Hillary Clinton and Barack Obama made final pushes for votes Monday night in North Carolina.

They went door to door in Charlotte, trying to win over Democrats and unaffiliated voters. They also worked the phones and made signs.

Both camps had the same strategy: Reach as many people as possible before the North Carolina primary vote on Tuesday.

Clinton supporter Kathleen Powers is a senior in high school. She wasn't planning on volunteering but said Clinton inspired her. She said, "Either now or never. We're just really trying to get in contact with every single voter that we possibly can."

Another Clinton volunteer, Kamyl Bazbaz, said, "For us, we're really not taking any vote for granted at all. We want to talk to everybody we can."

Obama supporter John Fuller, lives in Atlanta. He has been driving around the country, pulling a horse trailer with a "Barack Obama" sign on it. Fuller said, "We're excited. We have an opportunity, right now, of history, no matter which way you look at it."

Another Obama volunteer, Sandra Thomas, said, "As hard as I have to. In fact, I would give up the night to work until the morning."