Cottonwood Heights and Holladay voters will find Amendment B on their Nov. 3 ballots. Both sides of the fight have launched paid campaigns to win them over.

Americans for Prosperity sent mailers statewide urging a "yes" vote, branding citizen tax initiatives as a "tax monster." The group also plans digital ads. On the other side, Better Boundaries announced a TV ad on Friday, Oct. 9, calling the amendment "a power grab by politicians," Fox 13 reported.

Amendment B would amend the Utah Constitution to require citizen-proposed ballot initiatives that increase taxes to pass with at least 60% of the vote, up from a simple majority.

A Noble Predictive Insights poll conducted Sept. 8–12 of 602 registered Utah voters found 50% support the amendment, 21% oppose it and 23% are unsure. The margin of error is plus or minus about 4 percentage points. Age is the sharpest divide: support runs at 29% among voters 18–29 and 64% among voters 65 and older. Among independents, 35% remain unsure.

Heather Andrews, director of Americans for Prosperity in Utah, told Fox 13 that the 60% threshold would keep a bare majority from imposing permanent tax increases. "A 60% threshold, we feel like, protects individuals from ballot initiatives funded by out of state groups trying to impose their priorities on Utah," Andrews said.

Elizabeth Rasmussen, executive director of Better Boundaries, countered that the amendment shifts power away from voters. She told Fox 13 the measure "makes it significantly harder for certain initiatives to pass."

The stakes are concrete. In 2018, Utah voters approved Medicaid expansion through Proposition 3 with 53% of the vote, a citizen initiative that gave roughly 150,000 people access to coverage, according to the Deseret News. Under Amendment B's 60% rule, that measure would have failed.

Only two citizen initiatives in Utah's 125-year history have cleared 60%, both in 2000, according to the Salt Lake Tribune. Utah already requires nearly 141,000 signatures across 26 of 29 state Senate districts just to place an initiative on the ballot.

Sen. Lincoln Fillmore, R-South Jordan, introduced the amendment on Jan. 21, 2025. In a Sept. 28 statement reported by Utah News Dispatch, Fillmore said Amendment B "leaves the decision with Utah voters while requiring broader agreement before a statewide initiative can raise taxes on Utah families."

The opposition committee, Utahns Protecting Our Constitution, had raised more than $590,000 as of a Sept. 28 ABC4 report. Americans for Prosperity's spending on its mailer and digital campaign has not been publicly disclosed.

Ballots have begun arriving in mailboxes. Election Day is Nov. 3.