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Bill de Blasio to Formally Launch Mayoral Bid Sunday, Sources Say

By Jill Colvin | January 25, 2013 12:09pm

NEW YORK CITY — Public Advocate Bill de Blasio is expected to formally announce his run for mayor this weekend, sources told DNAinfo.com New York.

de Blasio invited supporters to join him at his home in Park Slope this Sunday for an "important" announcement with family and friends.

"This Sunday, my family will be making a very important announcement about 2013. Please join us," he tweeted Friday morning via his campaign account.

De Blasio, a former city councilman and federal housing official, has been a frequent critic of the Bloomberg administration, and appears to be positioning himself to the left of his major challengers, including City Council Speaker Christine Quinn.

At campaign events, he frequently describes what he calls a "tale of two cities," and is expected to do well among outer-borough voters frustrated by what some feel has been a Manhattan-centric approach by the current administration.

The announcement will make de Blasio the second officially declared major democratic candidate, along with 2009 Bloomberg challenger Bill Thompson.

Quinn, the early front-runner, and City Comptroller John Liu are expected to formally announce their bids soon.