Former Ku Klux Klan leader David Duke predicted Friday he would win a Republican seat in the state House of Representatives despite opposition from Ronald Reagan, President Bush and Louisiana's governor.

Joining the attack on Duke were two Louisiana Democrats - Sen. J. Bennett Johnston and Rep. Billy Tauzin - who referred to Duke's white supremacist and Nazi connections.Duke said he would win the race over John Treen, despite Treen's endorsement by Bush and former President Reagan. Duke confidently predicted he would capture between 54 percent and 62 percent of the vote and scheduled a news conference for 11:30 a.m. Sunday, the morning after the election.

"I expect us to do very well. I would just guess between 54 and 62 percent," Duke said. "It depends on the turnout. The bigger the turnout, as far as we are concerned, the better we are going to do because we will get people who are fed up with the same old politics."

Treen said he needed a heavy turnout to win, saying the larger numbers would bring out people opposed to Duke, who left the Ku Klux Klan in 1979 to form and direct the National Association for the Advancement of White People.

"With 75 percent I think I am assured of a win," said Treen, a homebuilder and older brother of former Gov. Dave Treen.

Secretary of State Fox McKeithen predicted a turnout of 70 percent in the 99 percent white district of 23,000 voters.