Alexander Burns, Nicholas Kulish and Shane Goldmacher at NYT:
As Mr. Bloomberg traverses the country as a presidential candidate, he is drawing on a vast network of city leaders whom he has funded as a philanthropist or advised as an elder statesman of municipal politics. Bloomberg Philanthropies, which has assets totaling $9 billion, has supported 196 different cities with grants, technical assistance and education programs worth a combined $350 million. Now, leaders in some of those cities are forming the spine of Mr. Bloomberg’s campaign: He has been endorsed so far by eight mayors — from larger cities like San Jose, Calif., and Louisville, Ky., and smaller ones like Gary, Ind., representing a total of more than 2.6 million Americans.
For all of those endorsers, Mr. Bloomberg has been an important benefactor. All have attended his prestigious boot camp at Harvard that gives the mayors access to ongoing strategic advice from Bloomberg-funded experts. More than half have received funding in the form of grants and other support packages from Mr. Bloomberg worth a total of nearly $10 million, according to a review of tax documents and interviews with all eight mayors.