Gov. Cuomo’s approval rating hasn’t suffered since the corruption conviction of his former top aide — and he’d trounce Cynthia Nixon if the left-leaning actress challenges him in a primary, according to a new poll.

Although Cuomo’s name was mentioned more than 100 times in Joseph Percoco’s corruption trial, the governor’s favorability score held virtually steady at 52 percent, the Siena College poll reported Monday.

That was down just one percentage point since February.

Percoco, 48, was found guilty on two counts of conspiracy to commit honest-services fraud in a pair of “pay-to-play” scams that the feds say netted him more than $300,000 from execs at two companies doing business with the state.

In the match-up against Nixon, who is considering challenging Cuomo in a Democratic primary, the governor came out on top 66 to 19 percent among Democratic voters.

Although she starred in the hit “Sex and the City” series, 60 percent of voters said they didn’t know enough about Nixon to form an opinion. As a result, her favorability rating was a tepid 20 percent.

“While Nixon does a little better among younger and upstate Democrats, she doesn’t have the support of more than one-quarter of either group,“ said pollster Steve Greenberg.

“Looking at potential general election matchups, Cuomo has strong early leads over both declared but little-known Republicans, [John] DeFrancisco and [Marc] Molinaro.”

Cuomo was ahead of Molinaro, the Dutchess County executive, 57 to 29 percent. His lead over state Sen. John DeFrancisco was almost the same– 57 to 28 percent.

In one troublesome sign for Cuomo, just 48 percent of voters said they’d vote to re-elect him to a third term, while 46 percent said they’d prefer “someone else.”

The poll was conducted from March 11 through March 16 of 772 New York State registered voters. The results have a margin of error of plus or minus 4 percentage points.