2008 Cook County State's Attorney election

In the 2008 Cook County State's Attorney election, held on November 4, 2008, Democratic nominee Anita Alvarez defeated Republican nominee Tony Peraica and Green nominee Thomas O'Brien. Alvarez became the first Hispanic/Latina woman elected to the office.

The general election was preceded by primary elections held on February 5. After third-term Democratic incumbent Richard A. Devine opted to forgo seeking an additional term, Alvarez (a prosecutor in the State's Attorney's Office) narrowly won a crowded six-candidate Democratic primary with 25.73% of the vote. She won 9,562 (1.01%) more votes than runner-up Thomas R. Allen (a member of the Chicago City Council), who won 24.72% of the vote. In the primary, Larry Suffredin (a member of the Cook County Board of Commissioners) received 22.14% of the vote, Howard Brookins (a member of the Chicago City Council) received 18.18% of the vote, Robert J. Milan (an Assistant State's Attorney) received 5.82% of the vote, and Tommy H. Brewer received 3.41% of the vote. In the crowded contest, Alvarez benefited from the an endorsement by Chicago's police union, the Fraternal Order of Police Lodge #7. In contrast to the crowded Democrati primary, the Republican primary saw Peraica run unopposed, and the Green Party nominated O'Brien without a primary contest.