[Enchante]

Sorry, you’re mixing the Gubernatorial and Mayoral races..... Green and Ferrer were the main ‘RAT contenders in the NYC mayoral race in 2001. You’re thinking of Cuomo and McCall from the Gubernatorial election.......

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http://en.wikipedia.org/wiki/Election_results_for_mayor_of_New_York

2001 Mayoral elections occurred while Republican incumbent Rudy Giuliani was term-limited. As Democrats outnumber Republicans by 5 to 1 in the city, it was widely believed that a Democrat would succeed him in City Hall. However, billionaire Michael Bloomberg, a lifelong Democrat, changed his party affiliation a few months before the election in order to avoid a crowded primary and ran as a Republican. The Democratic primary, held on September 25, a few days after September 11 attacks, opened the way to a bitter run-off between Ferrer, a Hispanic, and Green, a caucasian, that left the Party divided along racial lines.

Eventually, with the support of Mayor Giuliani, Bloomberg won a very close general election.

[Political Junkie Too]

Yes, you're right. I think my head's going to explode now.

-PJ

[rmlew]

September 11th and 25 were the dates for all primaries.
Bloomberg ran against, and unfortunately beat, Herman Badillo in the Republican primary.