In the U.S. House election on November 2, 2004, Costa defeated Republican party challenger Roy Ashburn. The 20th Congressional District of California had been represented in the U.S. House by Democrat Cal Dooley, who had announced that he would not be seeking another term.
California's 20th Congressional District is located in the San Joaquin Valley.
Costa Rica held a presidential election on 5 February 2006.
He is perhaps best known worldwide for his role in the signing of the Esquipulas Peace Agreement which is regarded as the crucial plan which led to the eventual end to the series of civil wars that took place throughout Central America, most notably in Nicaragua, El Salvador, and Guatemala, during the 1980s.
He believes that the death of Costa Rica's two-party system shows that the system made it too difficult to reach agreements and that the new multiparty system that the country now has is better.
James Manuel "Jim"Costa (born April 13, 1952) is a Democratic politician from the U.S. state of California.
The Republicans pumped a considerable amount of money into the district, even though it was 63% Latino and gave Al Gore his highest vote total outside the state's two large conurbations, Sacramento and the San Francisco Bay Area in the north and Los Angeles and San Diego to the south.
Costa is running unopposed for reelection in 2006.