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Missouri voters delivered a blunt message this primary: they rejected Amendment 5 — the push to phase out the state individual income tax — by an overwhelming margin, roughly eight out of ten voting “No.” The amendment, backed publicly by Governor Mike Kehoe and sponsored in the House by Representative Bishop Davidson, promised tax relief but offered no clear plan to replace the revenue that pays for schools, prisons, and core government services. That gap proved fatal at the ballot box.
Why Missouri voters said “No” to Amendment 5 and the Missouri income tax plan
The simplest reason voters turned the measure down was the math — or the lack of it. Opponents kept repeating a plain point: you can’t erase roughly 60–63 percent of Missouri’s general fund and expect nothing to change. The amendment would have phased out the income tax and opened the door to expanded sales and use taxes as a replacement, but it didn’t say how much or for whom. Voters understood that shifting revenue onto consumption hits working families hardest. In short, “no replacement revenue, no sale” beat cheerful slogans every time.
Organized opposition beat vague promises — Missouri REALTORS and the Vote No effort
This was not a grassroots fluke. The No campaign was organized, funded, and effective. The Missouri REALTORS and allied PACs poured resources into “Missourians for Fair Taxation” and “Protect MO Taxpayers,” and their message landed: homeowners and small businesses feared higher sales or property taxes if income tax revenue vanished. The opposition framed the choice simply and clearly, and voters responded. When policy is explained in plain terms — “where’s the money going to come from?” — voters prefer answers to slogans.
Political fallout for Governor Mike Kehoe, Representative Bishop Davidson, and conservative reformers
Backing a plan that lost by such a wide margin is a political misstep for Governor Mike Kehoe and the amendment’s backers. Representative Bishop Davidson and allies asked voters to sign a constitutional blank check without filling in the numbers. Republicans can — and should — lead on tax relief. But this result is a reminder that conservative policy needs fiscal credibility. Bold promises without clear math are a liability, not a selling point, even in a red state.
What comes next for Missouri tax reform
The takeaway is straightforward: Missouri conservatives should keep pushing for lower taxes, but do it with a plan. If leaders want to change how the state raises revenue, they must show the replacement revenue, spell out the transition, and protect core services. Expect a post‑vote accounting of who spent what in the fight and a scramble among lawmakers to regroup. For now, voters made their choice. They said yes to fiscal responsibility, and no to empty promises dressed up as reform.
