(AP) – The Kansas Senate has voted to preserve a full state income tax deduction for contributions to charity and to scrap a deduction for gambling losses.

Senators continued to rewrite an income tax bill as they debated it Wednesday.

The bill contains Republican Gov. Sam Brownback’s proposal to follow last year’s massive income tax cuts by phasing in additional rate cuts over four years.

But Brownback and lawmakers must also stabilize the budget and are looking for revenue-raising measures.

Senators approved phasing out all income tax deductions as tax rates drop. But later, they tinkered with the language to ensure the phase-out didn’t include the charity deduction.

The Senate also amended the measure to eliminate a deduction for gambling losses, which would raise about $6 million annually.