SPRINGFIELD — State lawmakers are on track toward overhauling the governance of mass transit across the Chicago area, but a lengthy list of proposed new taxes could derail efforts to stave off the fiscal cliff facing the CTA, Metra and Pace.

Democratic legislators on Thursday were mostly on board with the proposal to replace the Regional Transportation Authority with a strengthened new body known as the Northern Illinois Transit Authority, overseeing bus and rail service In Chicago, Cook County and the collars.

But as with so many issues in the state Capitol in a difficult budget year, the biggest question still nagged at Democratic leaders in the waning hours of the spring legislative session: who pays for it?

State Sen. Ram Villivalam, D-Chicago, offered up a list of revenue options t

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