Ever since the terror attacks in lower Manhattan on September 11, 2001, it's been an unwritten rule: No politics on 9/11.

But perhaps with the passage of time, it's a rule that is starting to evolve. Cynthia Nixon, for one, had a campaign stop in Chinatown on Tuesday.

"This event today, it was an event that I was asked to do by the Asian-American and Pacific Islander community," said Nixon, a Democratic candidate for governor. "Really, they were overlooked in the response to 9/11."

Nixon also went up on the air with her first television ad in the Albany area:

"We can pass single payer health care. We can end mass incarceration and invest in schools, not jails," Nixon narrates in part of the ad.

A few labor leaders criticized her decision to campaign on 9/11.

"I think there can be no more patriotic thing to do than to go out and be speaking to New Yorkers about a New York that works for all of us," Nixon responded.

Nixon took some shots at Gov. Andrew Cuomo, her opponent in the primary, in response to questions from reporters about the Mario Cuomo Bridge. The governor celebrated its opening Friday, only to have it remain closed due to safety concerns. Cuomo insisted he had nothing to do with the timing of the opening, but a letter obtained by the New York Times shows his administration was indeed involved.

"The letter is proof positive that the priority was not making sure that the bridge was ready, not making sure that the bridge was safe, but that all of those were minor considerations when it came to a rollout and a photo-op and a ribbon-cutting for him a week ahead of the election," said Nixon.

The bridge has since been deemed safe and was scheduled to open Tuesday night.

As for Nixon's decision to campaign on September 11th, it may simply be that she's running out of time in the primary campaign.