(Portland, OR)  --  Candidates in Oregon's race for governor are laying out their plans for the state's budget.  The Oregonian reports Democratic Governor Kate Brown supports business taxes to make the coffers grow, but her plan was knocked down by voters two years ago.  Her Republican challenger, Knute Buehler, insists that runaway personnel costs are the root of the problem.  Brown isn't saying how she plans to balance next year's budget, while Buehler contends the budget should start at zero, with each agency justifying their expenses.  Republicans introduced a zero-based budgeting proposal last year, and it didn't even get a hearing in the Legislature.