A former Democratic state senator from the Hudson Valley has approached party activists about challenging Gov. Cuomo in the Democratic primary next year, The Post has learned.

Terry Gipson served in the Senate from 2012 to 2014 before losing his re-election bid to Republican Sue Serino in the district that takes in Duchess County and part of Putnam.

A former design director for MTV Networks, Gipson also has strong ties to the left-leaning Working Families Party and Green Party.

His Twitter and Facebook posts are running diatribes on Cuomo’s tenure.

He slams the governor’s oversight of the MTA, blames him for Albany corruption and the upcoming state contract bidding rigging trial that includes former top aide Joe Percoco, and for aligning with Republicans in the state Senate.

Gipson even reached out to Democrats on Cuomo’s home turf of Queens.

“Hello New Queens Democrats. I’m a former NY State Senator (D) and believe that New York deserves a real Democratic Governor that will lead our party and move true Democratic policy forward. In Trump’s new America we cannot afford to wait,” Gipson said in a July 19 email.

“That’s why I’m exploring a run for Governor in 2018.”

The threatened primary shows that Cuomo still has issues with some lefties in his party as he seeks a third term — despite taking progressive actions to boost the minimum wage and enact paid family leave.

When he ran for re-election in 2014, Cuomo easily beat back a primary from Zephyr Teachout.

Democrats aligned with the NY Progressive Action Network, the new statewide organization built from Bernie Sanders activist groups around the state, will have its first interview with Gipson on August 7, said its treasurer-director Arthur Schwartz.

Gipson has sent out similar emails about his exploratory campaign with scores of progressive groups, including 20 NYPAN chapters, Schwartz said.

“NYPAN has publicly been seeking to find a strong candidate to take on Cuomo in 2018 and to unite the progressive wing of the party behind that candidate. NYPAN believes that Cuomo can be beaten, he lost most upstate counties to Zephyr Teachout in 2014, and now the subway and suburban railroad crisis has eaten into his support in the downstate areas which were his stronghold in 2014,” Schwartz said.

Schwartz said Teachout remains the most popular figure among progressive activists, but she’s likely to sit out the 2018 race.

A Cuomo insider dismissed a potential primary challenge from Gipson.

The latest Siena College poll shows that Cuomo had a 68 percent approval rating from liberals — which the Cuomo insider said is evidence that shoots down claims that the governor has a problem with the party’s leftist grassroots.

The insider also said Gipson is also a two-time loser in the senatorial district he once held — losing twice to Repubilcan Serino.