Nashville Mayor Karl Dean could be facing off with two heavy-hitting opponents when he runs for re-election in August. Channel 4's news partners at The City Paper said two of Dean's fiercest critics in the Metro Council are considering running for mayor. Councilmen Michael Craddock and Eric Crafton said they aren't closing the door on launching electoral bids to unseat Dean. So far, no one else has filed paperwork to run. Crafton said he wants Dean to be challenged and to have to answer some questions in the election. Candidates must pick up paperwork to qualify by Feb. 18.