Eliot Spitzer’s resurrection — from the disgraced governor better known as Client 9 to CNN talk-show host — has the political class buzzing about him running for mayor in 2013. Wilder still, one of his former targets is talking about running against him…

For the record, a CNN flack says Spitzer has “no plans” to run for mayor and “is happy doing the show.” Yet Spitzer is clearly fantasizing about a run, I’m told by several prominent city Democrats.

His fantasies have been buttressed, I also hear, by his ego-inflating experience as a CNN host (despite its lousy ratings) and the favorable treatment he got in “Client 9,” the documentary about his rise and fall, as well as in “Inside Job,” the Oscar-winning documentary on the financial crisis.