Rep. Raul Grijalva (D-Ariz.), who angered many in Arizona with his calls for a boycott of the state, has drawn his first GOP challenger.
Shortly after the Arizona Legislature passed a controversial law against illegal immigration last spring, Grijalva called for an economic boycott of his home state. That gave Republicans hope of knocking off the Democrat.
Conservative groups subsequently ran TV ads against Grijalva, which prompted the Democratic Congressional Campaign Committee to spend close to $200,000 on advertising against his GOP opponent, Ruth McClung.
Grijalva, who didn't face a primary in 2010, won reelection but the margin wasn't as comfortable as in past cycles.
On Thursday, Tucson resident Saucedo Mercer announced her intention to challenge Grijalva.
"I am running for office because I know in my heart that I can represent the people in CD 7 better than we have been represented over the last eight years by the incumbent," the Republican, who was born in Mexico and came to the United States in the 1980s, said in a statement Thursday.
Mercer's early entry into the race could be a signal that the GOP will again target Grijalva in 2012.