Voters turned sour on New York politicians in February — with Gov. Andrew Cuomo registering his lowest popularity rating since becoming the state’s chief executive in 2011, a new poll released Monday reveals.

Only 43 percent of voters statewide viewed Cuomo favorably compared to 50 percent who viewed him unfavorably, the Siena College survey found.

That’s a sharp drop from January, when 51 percent of voters viewed Cuomo favorably compared to 43 percent unfavorably.

His job performance rating also plummeted: Only 35 percent of respondents rated his performance as good or excellent, compared to 64 percent who graded him as only fair or poor. Last month, 43 percent rated his job performance positively and 56 percent negatively.

Other pols also took a hit in the new poll.

Sen. Chuck Schumer, the Democratic minority leader who has been battling President Trump, saw his favorability rating drop, with 47 percent viewing him favorably and 46 percent unfavorably — also his lowest rating recorded by Siena.

In January, 53 percent of voters had a favorable opinion of Schumer compared to 39 percent who didn’t.

Sen. Kirsten Gillibrand, who is running for president, also saw her favorability rating drop, but not as much as Schumer or Cuomo.

The poll showed that 44 percent of voters view her favorably and 34 percent unfavorably. Last month, 48 percent viewed her favorably and only 31 percent unfavorably.

“Politically, Cuomo’s ratings drop is across the board, as he fell with Democrats, Republicans and independents,” said pollster Steve Greenberg.

Greenberg said there was no apparent reason why more voters turned negative on New York’s pols.

Voter disapproval also rose slightly for the Democrat-run state Senate and Assembly compared to last month — even though they passed five major measures, which far more voters identified as good rather than bad for the state: the Child Victims Act, the Gender Identity Non-Discrimination Act, a new gun control package and election reforms and the controversial Reproductive Health Act that strengthens abortion rights.

The favorability rating for the Assembly fell from 48 percent in January to 43 percent in the most recent poll. The Senate’s positive rating dropped from 49 percent to 43 percent.

Greenberg did say that Schumer’s partisan fights with Trump and the GOP — including over last month’s partial government shutdown — contributed to a steep drop in his popularity among New York’s right-leaning voters.

“Just before Schumer became U.S. Senate Minority Leader, he had a 67-23 percent favorability and was far and away the most popular New York pol. At that time, Republicans viewed him favorably 55-37 percent. Today, he has a break-even favorability rating with all voters, and Republicans — New York Republicans — view him unfavorably 84-15 percent,” Greenberg said.

Cuomo senior adviser Rich Azzopardi sought to dismiss Siena’s poll showing “across the board slides” for the governor and other pols as an “outlier,” adding, “We’ve had the most productive month in history that finally saw the passage of popular, long-stalled legislation and we’re going to continue to move New York forward.”

The Siena poll surveyed 778 registered voters from Feb. 4 to 7. It has a 4.3 percentage-point margin of error.