Former governor Mario Cuomo has been hospitalized for a heart condition since the day after his son, Andrew, was re-elected to his dad’s old job, The Post has learned.

The 82-year-old appeared with his son at campaign headquarters the night of Nov. 4, and was rushed to a Manhattan hospital for a “heart procedure’’ the next day, a source said.

The elder Cuomo, who served three terms as governor — from 1983 through 1994 — looked frail in photos taken on election night, when he joined his son on the podium but did not speak.

Rumors have been circulating in political circles since then that his health has been deteriorating.

A spokesman for the governor’s office said Saturday, “He is in good spirits and thanks everyone for their support and best wishes.’’

The office would not say at which hospital he was being treated or disclose any details on his condition.

The former governor had been seen as a leading contender for the Democratic presidential nominations in 1988 and 1992.

But he chose both times not to seek the office.

He sought a fourth term as governor in 1994, but was defeated by Republican George Pataki and retired from politics.