WASHINGTON - X-rated wanna-be politician Mary Carey vows she'll be on her best behavior tonight when she attends a GOP fund-raiser that President Bush is headlining.

"I'm going to show Washington that a porn star is more than someone who just flashes her boobs," the bubbly buxom blond told the Daily News.

"In real life, I'm proper, quiet and demure, but nobody sees that," added Carey, who ran for California governor in 2003. "We can show Washington that we're normal people, too."

For more than a week, the White House has dodged the question of whether Carey should be allowed into the fund-raiser sponsored by the Republican National Congressional Committee.

"Those are questions to direct to the event sponsors," said Bush spokesman Scott McClellan.

But an RNCC spokesman has said the committee would take Carey's $2,500 price of admission and spend it to elect more Republicans. Carey's manager, porn-flick mogul Mark Kulkis, got the green light yesterday without a hassle.

"They just gave us the dinner tickets," Kulkis said. "A Secret Service agent even came up and asked for Mary's autograph."

But some Christian evangelicals demanded an explanation.

"I've sent three E-mails to [GOP Chairman] Ken Mehlman saying, 'Hey, give us some kind of explanation here,'" said the Rev. Donald Wildmon of the American Family Association. "I think I'd be more interested in getting votes, rather than raising money."

Carey, meanwhile, plans a fashion show for the press today to show off her gown for the gala, the latter expected to raise $23million for GOP House and Senate candidates.

"I've got to get up early to get my nails done," she said.