Coloradans defeated an amendment to cut income taxes by 10 percent and voters dumped tax-reform efforts in Arkansas, South Dakota and Utah.

Nevadans overwhelmingly approved a constitutional prohibition on personal income taxes. The measure, backed by the casino industry, was approved 83 percent to 17 percent.South Dakotans rejected Proposition II, which would have rolled back property taxes and limited future increases, by 61-39 percent, with 96 percent of the precincts reporting.

Coloradans defeated a "Taxpayers Bill of Rights Amendment," which would have cut income taxes about 10 percent, limited property taxes and required voter approval on future hikes except in emergencies. The measure lost, 58 percent to 42 percent, with 99 percent of the precincts reporting.

Colorado Gov. Roy Romer celebrated the defeat. "It's good to get that one behind us," he said.

"It would be bad for Colorado. I see two messages here. Citizens want to prepare for the future, and we need to continue to be as efficient and frugal as we can continue to be."

In Utah, voters overwhelmingly rejected three tax initiatives that together would have lowered state and local revenues by $329 million. The measures would have limited property taxes, rolled back income, sales, gasoline and cigarette taxes, and granted tax credits for private education. (Story on A1.)

A "Fair Tax Amendment" that would have made it easier for the Arkansas legislature to raise certain taxes failed 62-38 percent with 95 percent of the precincts reporting.