In the interview, he accused the Times (which has endorsed the Conservatives) of being biased.
The United Auto Workers, which has endorsed Mr. Kerry, has not embraced either plan.
And the United Steelworkers of America, which has endorsed Mr. Gore, remains detached from his campaign.
That opposition could complicate budget talks with the House, which has endorsed the approach.
That sets up a split between New York's Republicans and the Conservative Party, which has endorsed Mr. DioGuardi.
"It's an enormous endorsement," said Stuart Appelbaum, the president of the city's retail workers' union, which has endorsed Mr. Thompson.
He also never completed an apprenticeship and does not belong to the plumber's union, which has endorsed Mr. Obama.
It has been criticized as exploiting tragedy by Democrats and the union that represents firefighters, which has endorsed Mr. Kerry.
He said he thought the Michigan Education Association, which has endorsed his rival, was behind the calls.
"The mayor went out of his way to give charters preferential treatment and advantages," said Michael Mulgrew, president of the union, which has endorsed Mr. de Blasio.
These ideas already have a few fans, including Ted Nordhaus, a founder of the Breakthrough Institute, which has endorsed similar measures in a report called "Climate Pragmatism".
