Texas Governor Rick Perry has adopted a favorite plank of economic libertarians - the 2/3rds super majority vote of the legislature for any tax increases.
From the Statesman.com, June 6:

Perry, facing a tough re-election fight in the March Republican primary, called for a constitutional amendment requiring any increase in state taxes to be approved by two-thirds of the Legislature, instead of a simple majority. He also said he wants a tighter constitutional restriction on state spending.

"These two sensible amendments will engrave our proven fiscal discipline into the bedrock of state law," Perry said during campaign stops in Fort Worth, Lubbock and Midland.

But he doesn't stop there. Perry is also proposing stringent spending reductions. Continuing:

Perry said the state constitution should limit growth in spending to the combined rate of growth in population and education. The state constitution now says spending cannot grow faster than projections of personal income.

Perry's proposed amendment would require a vote of the people to exceed the new spending cap.

The Governor was quoted in the Houston Chronicle saying he hoped the proposals might work as a counter to protect the State from big spending in Washington:

"This sets a nice high hurdle for lawmakers who might be inclined to raise taxes, and require broader support for decisions of this magnitude."