Oliver Koppell’s state Senate campaign on Wednesday is touting his weekend endorsement from the Working Families Party over IDC Leader Jeff Klein.

“In his career of public service, Oliver Koppell has put the needs and values of New York’s working families first. Koppell is committed to helping lift the wages of New Yorkers and prevent wealthy donors from buying our elections. The Working Families Party is proud to endorse Oliver Koppell,” said the WFP’s Bill Lipton.

Koppell is trying to unseat Klein, a Bronx Democrat who is aligned with Senate Republicans in a majority coalition.

His challenge is one of two Democratic primary bids to unseat IDC lawmakers with former city Comptroller John Liu taking on Queens Sen. Tony Avella.

“I am honored to receive the endorsement of the Working Families Party and am confident that together we will provide the residents of the 34th Senate District with a true progressive voice in the State Senate,” Oliver Koppell said. “Jeff Klein has put his desire for personal power ahead of serving his constituents and representing their values and, together with the Working Families Party, I will ensure that the 34th Senate District is once again represented by a true Democrat.”

Koppell, a former city councilman and briefly the state attorney general, still faces long odds in taking on Klein, who has the support of labor groups as well as local Bronx political leaders like Carl Heastie.

Update: Klein spokeswoman Candice Giove notes Klein never sought the WFP’s endorsement to begin with, and reminds me of this story in Crain’s.