Pollster Predicts Democratic Gains in Arizona Legislature, Nov 3

As Arizona voters prepare to cast ballots in the November 3 midterm elections, a prominent Phoenix pollster projects a realignment that could shift legislative control in the Grand Canyon State. Mike Noble, founder and chief executive officer of Noble Predictive Insights, stated in an interview with KTAR News 92.3 FM on Tuesday that his internal modeling favors Democrats capturing the state House, securing a tie in the Senate, and maintaining the governor’s office.

The projection points to a shift for a statehouse that has remained under Republican leadership for generations. Since 1966, Democrats have managed to emerge from an election cycle with a majority in the 60-member House only three times—specifically in 1974, 1976, and 1990—and have never achieved better than a 15-15 split in the 30-member Senate.

Noble’s statistical models assign a 61% probability that Democrats flip the House, contrasted with a 30% chance that Republicans preserve their majority and a 9% likelihood of a tied chamber. Capturing either legislative body hinges on razor-thin margins. Democrats need to pick up just four seats in the House and three in the Senate to win outright, or one fewer in each respective chamber to force a power-sharing tie.

The Independent Voter Exodus

The driving force behind this potential legislative pivot is an erosion of support for the GOP among independent voters, who now constitute the single largest voting bloc in Arizona. Decades ago, independent voters leaned toward Republican candidates by roughly seven percentage points. Today, according to Noble’s analysis, Republicans are trailing among independents by approximately thirty points.

Over recent election cycles, the Republican hold on the legislature has grown increasingly precarious. The GOP eked out single-seat majorities in the House following the 2018, 2020, and 2022 elections, alongside one-seat margins in the Senate in 2020 and 2022. Relief arrived for the party in 2024, expanding their operational breathing room to a 33-27 majority in the House and a 17-13 advantage in the Senate over the past two years, as documented on the Arizona State Legislature member roster.

Despite that recent cushion, the current political environment has created a challenge for incumbent Republicans. A small handful of competitive districts will ultimately determine whether Arizona public policy pivots sharply to the left next week.

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