ALBANY – Democrats are letting Ralph Nader onto the presidential ballot in New York without a fight, saying he does not present a serious threat to Senator Kerry in this state.

In contrast to their efforts in other states, Democratic Party officials raised no objections to the petitions the Nader campaign filed at Albany last month.

As a result, there’s nothing to prevent the nomination on the Peace and Justice ticket of Mr. Nader and his running mate, Peter Miguel Camejo, from becoming official September 27, said a spokesman for the state Board of Elections, Lee Daghlian.

Mr. Nader and Mr. Camejo are also expected to receive the nomination of the Independence Party, at its statewide convention this weekend.

Mr. Nader is likely to cut into Mr. Kerry’s lead over President Bush in New York, which shrank to single digits in two polls taken earlier this month after the Republican National Convention. Democrats are convinced, however, that the third-party candidate will not draw enough support to throw New York’s 31 Electoral College votes to Mr. Bush.

“In Florida and Ohio, every vote will count,” the executive director of the state Democratic Committee, Chung Seto, said. “In New York, we’re not just leaning Kerry-and-Edwards, we’re very pro-Kerry-and-Edwards. So having Nader on the ballot would not draw the attention or the vote.”

“Democrats should not lose any sleep on this one,” said a Democratic political consultant, Hank Sheinkopf.

“It would have been worse had they not allowed him on the ballot,” Mr. Sheinkopf said. “Nader would have had the opportunity to generate immense free press, creating more controversy, which the Democratic ticket does not need. The smart move was to let him on the ballot, not create attention.”

In a Marist College poll of registered voters released last week, Mr. Kerry was leading Mr. Bush 48% to 40%, with 4% for Mr. Nader, and 8% undecided. Mr. Kerry’s 8-point lead was down from 17 points in April, when he was ahead by 54% to 37%.

A Quinnipiac College poll of registered voters, released the same day, had Mr. Kerry with the support of 47%, Mr. Bush at 41%, and Mr. Nader at 4%. A month earlier, the Quinnipiac numbers were 53% for Mr. Kerry and 35% for Mr. Bush.

A vice chairwoman of the Independence Party, Cathy Stewart, said she is supporting Mr. Nader as a voice for reform of the political system and is not concerned about his impact on the horse race between the major parties.

“If Bush wins it’s because of the kind of campaign and the lack of vision of the Democratic Party and their standard-bearer,” Ms. Stewart said. “I don’t think it’s because of a spoiler.”

In 2000, Mr. Nader received 244,030 votes in New York, to 2.4 million for Mr. Bush, and 4.1 million for the Democratic nominee, Vice President Gore.

The addition of Mr. Nader to this November’s ballot will give New Yorkers as many as six choices for president: Mr. Bush, Mr. Kerry, Mr. Nader, David Cobb of the Green Party, Michael Badnarik of the Libertarian Party, and Roger Calero of the Socialist Workers Party.

Mr. Bush was cross-endorsed yesterday by the Conservative Party of New York State. Mr. Kerry is expected to receive a cross-endorsement from the Working Families Party later this week.