Voting about voting about tax increases:
No law shall be enacted to impose or increase any tax, or to allow the counties, cities, or towns to do so, unless approved by a majority of the qualified voters of the jurisdiction to which the tax or increase pertains.
This isn't just about sales taxes, it's about all taxes. Including property taxes levied by county, city, and town governments. Those property taxes are a major source of funding for school construction, but they also cover police and fire protection, public works, parks & recreation, etc. Every year (or two) municipal governments crunch numbers on their budgets (which the state requires to be balanced, by the way), and those elected officials have to decide what is needed, and whether property taxes have to be increased to cover those needs. They are already constrained by electoral politics, but this Amendment would shift those decisions directly to the voters. And if you believe they would ever vote to increase their own taxes, I've got a bridge to nowhere I'd like to sell you.