After a long night at the statehouse, lawmakers have ended a budget impasse, but Gov. Dannel Malloy has previously vowed to veto the Republican-backed plan.

The Connecticut House passed a $40.7 billion plan. 

The final vote of 78 to 72 came in at just before 2 a.m. 

The vote came after the Democrats' budget deal failed when three Senate Democrats defected. 

The GOP plan relies on changes in state employee pensions after the current state union deal ends in 2027. Republicans say it achieves $270 million in savings. It was approved on a 21-15 vote by the Senate Friday afternoon with the backing of three Democrats.
  
Gov. Malloy vowed that he won't let the Republican plan past his desk.

The governor said, "If it were to reach my desk, I would veto it....If the responsible solution I negotiated with Democrats isn't going to pass, then it is incumbent on the Legislature to reach a new agreement soon – one that is realistic and, ideally, bipartisan."

Malloy supports a $41 billion proposal by Democrats. He says the Republican proposal "relies on too many unrealistic savings" and is "unbalanced."

Associated Press wire services contributed to this report.