This week comes word that Bloomberg is privately endorsing Quinn's bid as his successor.
The New York Times reports:
Houston, the nation's 5th largest city, is the only other major U.S. city with an openly LGBT mayor, Annise Parker. However, Quinn being elected the Mayor of New York City would be a historical moment for the LGBT rights movement worldwide, not just for America.
It is the worst-kept secret in City Hall. Michael R. Bloomberg has told almost everyone who asks — but only privately, so far — that he hopes the City Council speaker, Christine C. Quinn, will succeed him as mayor in 2013.
While Mr. Bloomberg brings unprecedented personal resources to his political agenda, few other New York City mayors have succeeded in anointing a successor.
Mr. Bloomberg, in fact, was the only mayoral candidate in recent memory for whom an endorsement by the incumbent proved instrumental, even if it was a begrudging, last-minute nudge from Rudolph W. Giuliani.
Mr. Bloomberg, an independent, has refrained from specifying an heir publicly, since he seems to prefer to keep Ms. Quinn, a Democrat, and other prospective candidates as compliant as possible in the two years remaining before the next mayoral election.
Jamie McShane, a spokesman for Ms. Quinn, said, “She has never asked for nor has he offered his support.”
A spokesman for Mr. Bloomberg said the same.
Still, the mayor has made it plain in private conversations with other politicians and civic leaders that he prefers the City Council speaker.