SPRINGFIELD, ILL. Heated debates over income taxes and abortion funding in the state Capitol Tuesday belied what legislative leaders said was a collegial negotiation over the full budget which made lawmakers optimistic they could complete their work by Thursday’s deadline. The Democratic-controlled House endorsed a resolution calling for abandoning Illinois’ flat income tax for a graduated tax that hits wealthier taxpayers harder than those of lesser means. It’s endorsed by Democratic candidate for governor J.B. Pritzker, but the vote was 61-52 in a legislative chamber with 67 Democrats.