The Presidential Preferential Primary Election was held on March 6, 2012, and the Primary Election was held on June 26, 2012.

[1] All five Oklahoma seats in the United States House of Representatives are up for election in 2012.

One seat on the Oklahoma Corporation Commission is up for election in 2012.

All 101 seats in the Oklahoma House of Representatives are up for election in 2012.

These races are "retention" votes based on Oklahoma's use of the Missouri Plan for electing judicial nominees.