A new study finds that Musk’s partisan activities slashed Tesla sales to Democrats, but didn’t get offset by higher sales to Republicans.

If you’ve spent any time on a California freeway, you’ve probably seen an increasing number of Tesla cars on the road bearing anti-Musk bumper stickers.

“I bought this before we knew Elon was crazy,” reads one. “Eco-friendly, not Elon-friendly,” reads another. Some bear Elon Musk’s name or image with a bright red slash through them.

Those defensive messages would seem to validate the reasonable expectation that Tesla Chief Executive Musk’s foray into partisan politics — specifically, far-right politics — has sapped the appeal among Democrats and liberals for a product that once proclaimed its owners’ commitment to the fight against global warming and

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