Calling their dad "a really good guy," President Bush's twin daughters are urging young people to vote, saying that schoolwork, parties and extracurricular activities often keep students away from campaigns and voting booths.

Bush's re-election campaign sent out an e-mail Tuesday with a message from Jenna and Barbara Bush saying that less than half of 18- to 24-year-olds were registered to vote in the last election and that only 32 percent actually did vote.

"We are asking you to get involved with this campaign not only because it is the most critical election of our lifetime, but also because we have the ability to positively change our future," said the 22-year-old twins.

Bush's daughters have gone on the campaign trail with him and have taken part in an Internet chat program sponsored by the Bush-Cheney campaign.

"Our dad has qualities that are needed in a good president — loyalty, humor (embarrassing as it sometimes may be), compassion, and, most importantly, integrity," the young women said. "We're not the only ones who see it. In fact, our friends — from varying political backgrounds — are supporting our dad in November."

The sisters said the president has always been happy to be known as just their father. "He made everyone feel welcome and comfortable in our house (except for the occasional boyfriend) and our friends got to know him as a really good guy," they said.