Republican Senate and House candidates are being out-raised by their Democratic rivals, but the party has received a huge boost from groups tied to Elon Musk and President Trump.

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With control of the Senate at stake, Mara Gay traveled to this Texas border region to hear from voters.

The world’s richest person, who has become the biggest known midterm donor, gave $158 million to a group that quickly spent that much to help Mr. Paxton’s Senate bid in Texas.

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Ken Paxton celebrated New Year’s Eve in 2024 with two men wanted on federal charges, one of whom donated at least $190,000 to his campaigns. The extent of his ties to the men was unclear.

We look at the costliest race in America.

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