Democrat Bill Clinton and black activist Jesse Jackson launched a three-week voter registration drive Saturday that Jackson said had the power to turn President Bush out of office.

"If you want to send Bush and (Vice President Dan) Quayle to private life, come on down," Jackson said, urging unregistered adults in a crowd of thousands to approach the stage and register."Bill Clinton has his role as the new president, but it will not be real unless you stoke the engine with your coal, with your vote, with your power to make that difference," Jackson said as he stood at Clinton's side at a festival celebrating the black family.

Bush, meanwhile, spent the day at his Camp David retreat but used a radio speech to promote his economic policies.

"My agenda offers the promise of a renewed America. . . . My opponent wants to raise taxes and raise spending," Bush said in remarks that focused on his strategy for reviving the nation's moribund economy.

Clinton and Jackson appeared in the shadow of the Washington Monument in Washington, a site not far - Jackson noted - from the spot where Martin Luther King 29 years ago delivered his "I have a dream" speech, which galvanized the civil rights movement.

Clinton has had a rocky relationship with Jackson during his presidential campaign, and the joint appearance by the two had not been announced in advance.

Earlier in the week, the two encountered each other at a National Baptist Convention in Atlanta and had conferred briefly about appearing together on the campaign trail but came to no agreement, Clinton aides said at the time.

Clinton used the black festival in Washington to renew his attacks on the Republicans' focus on so-called "family values" in the 1992 presidential campaign and their claims that the Democrats somehow lack such values.

"I like seeing people who came to celebrate and honor the idea and the reality of the black family, not to use the term `family' to divide the American people as an excuse to divert our attention from the urgent problems before us," Clinton told an enthusiastic crowd.

"In 52 days you will have a chance to think about your family and its future," he said, referring to Election Day, Nov. 3.

Introducing Jackson, Clinton said the black leader "has agreed to lead a crusade across this country for the next three weeks to help to register the people of America to vote."

"For the next three weeks we are going to go around the country and try to galvanize every person in this country who is not regis-tered and tell them their vote counts just as much as the rest of us," Clinton said.

But it was Jackson who stole the show with a brief but electric speech that cited King and other heroes of the black civil rights movement as well as South African black leader Nelson Mandela as reasons to register and vote.

"The price we paid for the right to vote was simply too much," Jack-son said. "For that right, they faced tanks in China, and Mandela stayed in jail 27 years for a right he still does not have - the right to vote," he said.

Clinton later attended a crab feast fund-raiser in Falls Church, Va., along with Tipper Gore, the wife of his running mate, Sen. Al Gore of Tennessee.

While some 300 Democratic supporters chanted "We want Bill," dozens of Bush partisans waved signs outside the event, and two hecklers were hustled out after they interrupted Clinton's remarks by shouting "Bush-Quayle '92"

Later Clinton was the guest of Pamela Harriman, a leading Democratic power broker, at her estate in Middleburg, Va.

Both the Bush and Clinton campaigns were preparing for swings to the West Coast next week.

Clinton and Bush were planning nearly simultaneous visits to the all-important state of California, where 54 electoral votes are up for grabs - about a fifth of the electoral votes needed to win the presidency.

Recent polls in that state give the Democrat a big lead, but the president's visit appears intended to challenge persistent reports that the Bush campaign has ceded the state to the Clinton camp.

Bush will focus on Southern California - a traditional Republican stronghold that has shown signs of deserting the party for the Democrats this year - with a rally planned in the San Diego area Sunday.

Clinton will hit San Jose and San Francisco - traditionally friendly turf for Democrats - with campaign stops Monday evening and Tuesday. He heads Wednesday for Los Angeles.

Also on the agenda for Clinton's Western swing are Oregon Monday morning, Colorado Thursday and New Mexico Friday.

Bush planned to campaign in Oregon and Washington Monday and Tuesday in Utah, Colorado and New Mexico.

Bush won California in 1988, but the state's fiscal crisis under Republican Gov. Pete Wilson, a close Bush ally, has turned state voters against the GOP, according to polls.