Democrats also make many Democratic elected officials into unpledged "superdelegates," which also has the effect of amplifying the power of the states that elect the most Democrats.
Mrs. Clinton's fund-raising success came even as some Democratic elected officials continue to have concerns about her electability and the possibility that a Clinton candidacy next November would drag down fellow candidates for Congressional and state races.
"Democrats interested in winning are shitting themselves," one Democratic elected official told HuffPost on condition of anonymity.
Mr. Bloomberg received the endorsement of State Senator Olga A. Mendez, a Democrat who represents East Harlem, but a scheduled meeting with another Democratic elected official, Assemblyman Adriano Espaillat, was called off by Mr. Espaillat at the last minute.
Booker was endorsed Wednesday by 64 Democratic elected officials in South Jersey, including several of the most powerful Democrats in state government.
No prominent Democratic elected official has publicly called for Mr. Silver's ouster.
"Frank's incredibly smart and hard working and aggressive," said one admiring Democratic elected official.
But Democratic elected officials have spent much of the last generation trying to contain the exuberance of their liberal base.
But Mr. Hynes, one of the more solidly entrenched Democratic elected officials in the city, has not taken up the cause before.
"It's kind of sad when Democratic elected officials make an oil company look environmentally friendly," said Jeff Tittel, executive director of the New Jersey Sierra Club.
"For years, choice was the hot button that got conservatives and liberals up in arms," one adviser to a Democratic elected official said.
