CHICAGO — Schools in Illinois could start classes in a few weeks without receiving any state money to help pay teachers, buy supplies or keep lights on, as a new front in the yearslong fight between the Republican governor and majority Democrats threatens funding for roughly 850 districts statewide.

Democrats for nearly two months have held off on sending a funding bill to GOP Gov. Bruce Rauner because he’s pledged to strip money for Chicago Public Schools that he’s declared a “bailout.” If the two sides can’t reach an agreement, some poorer districts worry they won’t be able to keep the school doors open into fall.

It’s just the latest man-made crisis to hit Springfield, where lawmakers earlier this month voted to override Rauner’s veto to end a state budget impasse that stretched into a third year, creating billions in debt and forcing some domestic violence shelters and other social service programs to shut down.

School administrators, who faced a similar worry last year due to the budget standoff, say there’s a feeling of deja vu — and dread.

“This year the stalemate is longer and you can tell it’s a lot more intense,” said Todd Covault, chief operations officer and treasurer for Decatur Public Schools. “Right now there’s no assurance any money is going to be coming.”

Covault estimates the district in central Illinois — one of the state’s largest — will run out of money in mid-November if lawmakers can’t work something out. By then, “there’s going to be a lot of other districts ready to go under.”

Funding remains an issue because the budget deal lawmakers approved stated that any money for K-12 education must be distributed through a new formula intended to reduce large disparities between districts.

Democrats who control the legislature adopted the plan in May but Senate President John Cullerton of Chicago decided to hold on to the bill rather than send it to Rauner.

Cullerton said said he hoped Rauner would sit down with Democrats to work out a compromise, but either way he’ll send him the bill Monday.

Rauner said he’ll use his amendatory veto powers to remove millions allocated to the nation’s third-largest school district.

He’s objected to $215 million to help cover the cost of teacher pensions, as the state does for other districts but not Chicago, and another $250 million block grant. Rauner called lawmakers to Springfield this week for three days of a special session to deal with the issue, but with no bill to act on and no negotiations occurring, he’s spent time blasting Cullerton and Democratic House Speaker Michael Madigan of Chicago for holding up the process.

“Turn in your homework,” Rauner implored the two leaders Thursday after lawmakers adjourned for the day after just a few minutes. “We’re all here. There is no excuse for us not to be working on that bill.”