Fred DuVal has jumped in the race on the Democratic side to succeed Governor Jan Brewer.

DuVal filed paperwork with the Secretary of State's Office to establish an exploratory committee. He’s a former Arizona Board of Regents member who also served as a top aide and adviser to Bruce Babbitt both during Babbitt's terms as Arizona governor and his unsuccessful campaign for the 1988 Democratic nomination for president. He also served in the administration of President Bill Clinton.

On the Republican side, former Tempe Mayor Hugh Hallman filed a campaign committee last month to run for Governor in the 2014 race. There are expected to be a number of other candidates.

Longtime Capitol watchers have mentioned the names of Phoenix Mayor Greg Stanton and Mesa Mayor Scott Smith, among others. And lawyers for Governor Brewer have said she has the right to run again, though constitutional scholars say term limits make that impossible.