Ken Calvert ran for the U.S. House in 1982 but lost to Rep. Al McCandless. He ran again in 1992 and beat out Democrat Mark A. Takano with 47 percent of the vote.
He was re-elected in 1994 with 55 percent, again defeating Takano. In 1996, he was re-elected with 54 percent of the vote, defeating Democrat Guy Kimbrough.
Calvert won a fourth term in 1998, defeating Democrat Mike Rayburn with 55 percent of the vote. Calvert won again in 2000 with 74 percent of the vote. He faced no major party opposition.
He was re-elected in 2002.