New York Times: “With just over six months until the Democratic primary, no credible challenger — a person with some combination of name recognition, a political base, governmental experience and the funding to wage a knockdown campaign — has emerged.”

“In an era when political neophytes have captured offices as high as the White House, the lack of challengers to Mr. de Blasio, a Democrat, may seem mystifying.”

“His administration is mired in a series of overlapping fund-raising investigations, including some by the United States attorney for the Southern District of New York, Preet Bharara, that could result in indictments of Mr. de Blasio or top officials in the coming weeks.”