Following approval by each of the eight member state legislatures, the compact was signed by Minnesota Gov. Tim Pawlenty on February 20, 2007; Illinois Gov. Rod Blagojevich on August 17, 2007; Indiana Gov. Mitch Daniels on February 20, 2008; New York Gov. Eliot Spitzer on March 4, 2008; Wisconsin Gov. Jim Doyle on May 27, 2008; Ohio Gov. Ted Strickland on June 27, 2008; Pennsylvania Gov. Ed Rendell on July 4, 2008; and Michigan Gov. Jennifer Granholm on July 9, 2008.