Bill Brady has a proposition for Illinois:

Requiring a supermajority to pass tax increases

I wonder if that's been tried anywhere else.

Proposition 13 (officially titled the People's Initiative to Limit Property Taxation) was an amendment of the Constitution of California enacted in 1978, by means of the initiative process.... In addition to lowering property taxes, the initiative also contained language requiring a two-thirds majority in both legislative houses for future increases in all state tax rates or amounts of revenue collected, including income tax rates. It also requires a two-thirds vote majority in local elections for local governments wishing to raise special taxes.

Hm. How'd that work out for them?

California is a state in crisis. Negotiations to resolve its $26.3 billion budget deficit are weeks behind deadline, more than $470 million worth of IOUs are clogging government ledgers and its state bonds are trading at near junk status.

Brilliant idea, Bill.