President Bush and Virginia Gov. L. Douglas Wilder joined the tough-talking fight for Northern Virginia's 8th Congressional District seat yesterday, exchanging jabs on behalf of Republican Rep. Stan Parris and Alexandria Mayor James P. Moran Jr., the Democrat.

Bush, endorsing Parris at a Fairfax County fund-raiser, told 300 cheering Republicans, "I do not want to contemplate" the prospect of Moran defeating Parris in Tuesday's election. Repeating a familiar Parris refrain, Bush took a swipe at Moran's childhood in the Boston suburbs, saying, "We've got enough Massachusetts liberals in the Congress already."

Wilder appeared at an Annandale nursing home and chided Bush and Parris for holding their fund-raiser at a country club near Alexandria.

"A lot of people feel George Bush brings money" to campaigns, Wilder said. "But a breakfast at a country club sends a signal . . . that {Republicans} are not with the ordinary stripe of people. Is this how President Bush reaches out to people?"

The high-profile appearances by Bush and Wilder come amid signs that the outcome of the Parris-Moran race remains in doubt. Parris, a six-term incumbent, began the campaign with a sizable lead, but politicians in both parties say Moran has pulled close in the race's waning days.

The 8th District contest has been shaped by months of national political upheaval, particularly the recently ended stalemate over the federal budget. Bush and Wilder sounded partisan themes that emerged during months of fiscal haggling.

Bush, as he has in appearances for congressional candidates elsewhere, slammed a "Congress that is controlled by liberal Democrats" and warned that "When you hear {Democrats} say 'Soak the rich,' and you're poor or middle class, zip up your wallet. They're coming after you." He praised "the steady, constant, principled support I get in Stan Parris."

Wilder pointed out that some Republican officeholders have distanced themselves from Bush in the wake of the budget fight, and he questioned whether Bush's support might hurt Parris with some voters.

"Around the country, Republicans are taking different views," he said. "They don't want to be linked to the administration."

Neither Bush nor Parris pointed out that Parris voted against every budget proposal that came before Congress, including several supported by Bush. Parris's campaign manager, Randy L. Hinaman, said the budget "was just one item. Congressman Parris has long stood by the president."

Hinaman said he believes Bush's appearance helped Parris. "He is still the president of the United States, and he is still very popular," he said. "We are delighted to have him."

Without doubt, Bush helped fill Parris's campaign coffers. Guests at the event at the Belle Haven Country Club paid $100 apiece to hear Bush, and Hinaman estimated that the campaign will clear about $22,000 from the event.

Officials in both campaigns said the appearances by Wilder and Bush were designed primarily to mobilize hard-core Democrats and Republicans to come to the polls Tuesday. Turnout in the election is expected to be relatively light, and both campaigns said leaders such as Bush and Wilder can create enthusiasm among party activists.

"I did real well in this area {in the 1989 gubernatorial election}, and a lot of the people who were working for me then are working for Mayor Moran now," Wilder said. "I feel real good about his chances."