[cnn-photo-caption image= http://i.l.cnn.net/cnn/2008/images/01/29/art.romfla.cnn.jpg caption="Romney is set to go on the air in California and other Super Tuesday states."]LOS ANGELES, California (CNN) - Mitt Romney has decided to purchase a significant ad buy in California and other Super Tuesday states, campaign aides tell CNN's Dana Bash.
One campaign aide said the decision to buy in delegate-rich California was made Thursday morning.
The campaign is still deciding on what kind of ads it will run - whether the spots will target chief rival John McCain, or whether they will instead focus on the former Massachusetts governor's record and biography.
News surfaced Wednesday night California Gov. Arnold Schwarzenegger is set to endorse McCain's White House bid - reversing on his previous pledge not to support a candidate before February 5.