The home of a prominent Prince George's County Filipino leader who is a candidate for state delegate was vandalized yesterday by someone who painted a racist slogan on the garage door and set fire to campaign posters piled on the side of the house.

David M. Valderrama, 57, a former county Orphans' Court judge, said he and his wife returned home from a party about 2:30 a.m. to find graffiti painted in black on the house in the 9700 block of Potomac Drive in Fort Washington.

Valderrama said his daughter and a friend arrived at the home about the same time. "We were all frozen there looking, staring in disbelief," he said.

The group then noticed a small fire burning about 15 feet from the house, which they extinquished with water. The fire destroyed several of his campaign signs, Valederrama said. He added that the sticks used to hold up the signs had been arranged in the shape of a cross.

Prince George's fire investigators said it appears the fire was started using a flammable liquid. They have taken remnants of the burned materials to a laboratory to be analyzed, said fire department spokesman Ron Siarnicki.

Two family members were in the house at the time of the incident but didn't see or hear the vandals, Valderrama said.

"It's just so unreal . . . so disgusting," he said.

Valderrama, a longtime leader of the Filipino American community in Prince George's, left a seat on the county's Orphans' Court to run for one of the three House of Delegates seats representing the 26th District. A Democrat, he is running on a slate that includes three black candidates: 26th District Del. Gloria Gary Lawlah, who is running for the Senate seat; Mary C. Larkin, president of the Coalition on Black Affairs; and Bernard Phifer, a retired executive in the D.C. Department of Human Services.