A former New York City councilman has been sentenced to 10 years in prison for his part in a scheme to help a Democratic state senator run for mayor as a Republican.

A federal judge sentenced Daniel Halloran, a Queens Republican, for bribery and fraud.

Halloran was found guilty last summer of helping state Sen. Malcolm Smith bribe city Republican leaders for approval to seek the GOP line for mayor in 2013.

He was also convicted of taking payoffs from what he thought were developers who wanted him to funnel city money to them. The men were actually working for the FBI.

Halloran admitted taking money but said it was legitimate, for work as a political operative.

Smith was convicted last month and is to be sentenced in July.