Senator John Cornyn of Texas, a four-term Republican Senator, is spending record sums to try to fend off a primary challenge from Ken Paxton, the state’s attorney general, who is beloved by the MAGA base.

Mayor Eric Adams lost a recent lawsuit that sought to force the New York City Campaign Finance Board to release matching funds to his campaign.

Nikki Haley speaking in New Hampshire. Her campaign has been relatively frugal, which has kept her in the race against Donald J. Trump longer than any other rivals.

Gov. Ron DeSantis of Florida and his allied groups spent lavishly, including on private air travel for the candidate, but he dropped out of the Republican primary race after finishing a distant second in Iowa.

When Eric Adams was running for mayor, he put Brianna Suggs, then 23, in charge of his fund-raising operation.

Representatives Steve Scalise, left, and Jim Jordan at the Capitol in June. They are picking up endorsements ahead of a party vote tentatively scheduled for next week.

Nancy Marks, the former treasurer for Representative George Santos, pleaded guilty on Thursday to one felony count of conspiracy.

Ryan Salame, a former top executive at the cryptocurrency exchange FTX, pleaded guilty on Thursday to a campaign finance law violation and a charge of operating an unlicensed money transmitting business.