In another sign that voters are becoming tougher critics on proposals to raise taxes, voters in Colorado overwhelmingly rejected an income and sales tax increase designed to direct additional money to public education.

The proposal would have raised the state’s flat tax about 8 percent (from 4.63% to 5%).  The sales and use tax increase would have moved from 2.9 percent to 3 percent.

The measure lost 64% – 36%.  Democrats in Washington, DC should take notice.