Democratic congressional candidate Mondaire Jones gave a preview of the campaign to come on Thursday as Sen. David Carlucci prepares to enter the race for the Democratic nomination for the 17th House district.

As NY1’s Zack Fink reported this morning, Carlucci is expected to launch his bid for the seat being vacated next year by Rep. Nita Lowey.

But Carlucci’s candidacy could also be a test for the political aftershock of being a member of the now-defunct Independent Democratic Conference in the state Senate.

The IDC, which returned to the Democratic conference fold last year months before the party regained a majority, had been previously aligned with Senate Republicans, giving them a buffer in the narrowly divided chamber and, for one term, worked with them in a majority coalition.

Carlucci had been a charter member of the group, which formed in 2011 after Democrats lost power following a two-year stint in the majority.

“I’m running for Congress because we need a Democratic champion in Washington — and Carlucci is just the opposite,” Jones said in a statement.

“The State Senator turned his back on us when he empowered Republicans as a member of the so-called Independent Democratic Conference. For 8 years, he helped to block a woman’s right to choose, civil rights for the LGBTQ community, public education funding, criminal justice reform, and so much more that could have improved the lives of millions of New Yorkers.”

Carlucci and Sen. Diane Savino were the only two IDC members to survive to retain their seats last year; the other incumbent lawmakers lost their primary bids in September.

Carlucci himself was challenged in a primary and won. He has held the seat of a moderate Republican in the Hudson Valley, the late Sen. Thomas Morahan.

With Democrats in the majority, Carlucci has been a rank-and-file member, backing the conference on a range of key votes this year as the Senate approved long-sought liberal legislation on voting law changes, abortion rights and gun control.

But Jones believes the leadership question in the Senate should be that is something on voters’ minds.

“As someone who is gay, black, and a graduate of East Ramapo public schools, Senator Carlucci’s betrayal of New Yorkers and the Democratic Party is personal for me,” he said.

“We need bold, progressive leaders in Washington to stand up to Republican extremists and fight for guaranteed healthcare, full restoration of the SALT deduction, a Green New Deal, and debt-free college. What we don’t need is a Trump Democrat.”