Sen. Jeff Klein stood alongside prominent progressive advocates at the Capitol who he has feuded with in the past to tout a Senate budget resolution that would reject the effort to end a $350 million bank tax as proposed by Gov. Andrew Cuomo.

But the other details in the elusive budget resolution from the chamber remain elusive.

Klein told reporters that no agreement had been made on a range of issues, including whether to include an effort that would rescind Mayor Bill de Blasio’s decision to end co-location for charter schools.

“All this language is still being negotiated,” Klein said.

Reporters trailed Klein to an elevator near the Senate GOP’s office suit on the third floor of the Capitol.

Just as the doors were to close, Klein was asked if a complete deal had been reached on the resolution.

“There isn’t an agreement right now,” he said.

Klein would not confirm to reporters a final number in spending for universal pre-Kindergarten in New York City or statewide.

However, some aspects of the resolution appear to be nailed down.

The Dream Act funding will not be backed in the resolution, but a vote may come soon, Klein said, adding that he is supportive of such a move.

Good-government advocates who have been briefed on the resolution say there is language that is supportive of the public financing of political campaigns, but it remains unclear how the system would be paid for. One option raised this week for a donor-matching system has been using legal settlement funds.

At the same time, the news conference with the progressive advocates touting the victory on the tax highlighted another step forward on the spending plan.

Klein said the resolution will include several provisions aimed at the middle class his Independent Democratic Conference pushed earlier this year.

“I think we can do a much better job of putting it in better places,” Klein said.

He added, “This is something that we think we were very clear about — the IDC — that $350 million can be better spent in other places to help working families.”

The news conference was also a strange bedfellows moment.

Klein was introduced by Michael Kink, a former Senate staffer who is now the executive director of Strong Economy for All.

Kink last year was arrested outside of Klein’s office at a demonstration for public financing.

At the time, a Klein spokesman referred to Kink as “the toxic runoff from the Senate Democrats’ failed tenure in the majority.”