Rising household electricity prices and controversy over data centers are reshaping low-profile elections for control over utilities that build power plants and power lines — and then bill people for the cost.

The tensions played a prominent role during last year’s elections in Georgia, New Jersey and Virginia, and now they’re sweeping through Arizona and Alabama, where once-sleepy contests are becoming political brawls.

Even national groups like Turning Point Action — better known for its role mobilizing young conservatives behind President Donald Trump — are getting involved by knocking on doors and texting campaign messages. The organization wants to curb environmentalists’ influence over the Phoenix-area Salt River Project, the largest public utility in the country, in a Tuesday election.

The skirmishes are a preview for more campaigns later this year, when at least a half-dozen states will hold elections for utility regulators. That includes Georgia, where a second-straight hotly contested campaign is anticipated.

The burst of attention is dragging the behind-the-scenes politics of elected utility commissioners — long dominated by power brokers or monopolistic companies, critics say — into an intensely national debate over how to power artificial intelligence without driving up electricity costs.

“And that means suddenly there’s all this pressure,” said Dave Pomerantz of the Energy and Policy Institute, which pushes utilities to keep rates low and use renewable energy sources.

In Tuesday’s election that will determine control of Salt River Project, more than three times as many people requested early ballots than two years ago. Yard signs pepper street corners and ratepayers — they must own land to vote — are getting text messages, fliers and door-knockers.

The utility has already been under pressure to reduce its reliance on fossil fuels like coal and natural gas that emit planet-warming greenhouse gases. But now campaign organizations are converging on the race as the fast-growing Phoenix area becomes a destination for data centers and semiconductor factories. The utility projects that it will need to double its power capacity within a decade.