Thompson plans an announcement for 11, after Cuomo helps broker an end to the primary
Gov. Andrew Cuomo will hold an event with Bill de Blasio and Bill Thompson later this morning to help bring an end to the Democratic mayoral primary, according to multiple sources.
De Blasio won Tuesday's primary with just over 40 percent of the vote, the threshold needed to avoid a run-off with the second-place finisher, pending a count of outstanding ballots.
But Thompson refused to concede the race, pending a fuller count, and de Blasio, while collecting post-primary endorsements, has been careful not to directly push Thompson to end his call for a full and complete recanvassing. There are an estimated 5,100 mechanical voting machines and nearly 80,000 paper ballots yet to be counted.
For Cuomo, who avoided public appearances in the city during the primary, it's a bold entry that forestalls a potentially divisive run-off process, and projects his status as the central figure in the state's Democratic politics.
In 2001, a run-off between Fernando Ferrer and Mark Green left the party fractured, allowing Michael Bloomberg to win that November.
Both Thompson and de Blasio seemed intent to avoid that kind of rhetoric, but a number of Thompson supporters had already begun to defect amid calls for party unity.
Before the Cuomo event, several more Thompson supporters are expected to announce they are switching their support to de Blasio.
A spokesman for Cuomo did not immediately return a request for comment. Cuomo's public schedule said only that he is in New York City today.
UPDATE: Thompson's campaign has now said that he will make an announcement about his candidacy at City Hall at 11 a.m.