Soros to Endorse de Blasio for Mayor In a move that could excite left-leaning New Yorkers - but turn away some more centrist ones - the billionaire financier and liberal icon George Soros is set to endorse Bill de Blasio, the public advocate, on Tuesday as the next mayor of New York. At a glance, Mr. Soros, a hedge fund manager who has helped finance "super PACs" and collaborated with Mayor Michael R. Bloomberg, does not fit the typical profile of a supporter for Mr. de Blasio, who has pledged to raise taxes on the wealthy and turn back Bloomberg administration policies and who is a frequent critic of unrestricted political spending. But the two men, both Democrats, share a deep progressive worldview and, it turns out, an antipathy toward the controversial policing tactic of stop-question-and-frisk, which Mr. Soros described in a statement as "demeaning." "Relations between the people and their police are the worst in memory," Mr. Soros wrote in his endorsement, which was released by the de Blasio campaign. Bill de Blasio has cut through the rhetoric on stop-and-frisk, and alone advanced concrete policy changes that can mean far fewer innocent New Yorkers are subject to this demeaning practice while reductions in crime are maintained. Mr. Soros also praised Mr. de Blasio's plans for expanded prekindergarten classes, after-school programs and campaign finance reform. "He has the talent, vision and ability to lead New York City," Mr. Soros wrote. Campaign aides said Mr. Soros was not available for an interview. Mr. Bloomberg, whose economic policies have been sharply criticized by Mr. de Blasio for years, has teamed up with Mr. Soros on several philanthropic efforts, including an ambitious program introduced in 2011 to improve the lives of young black and Latino men. Mr. Soros pledged $30 million for the program, known as the Young Men's Initiative.