The people responsible for funding a sixth of the 2024 election could fit inside an Olive Garden restaurant. Campaigns this election season have raised roughly $7.2 billion, with the top 100 donors pitching in $1.2 billion, according to campaign-finance tracker OpenSecrets. The contest between Vice President Kamala Harris and former President Donald Trump—and the hundreds of down-ballot races in Congress—is on track to be one of the most expensive campaigns ever. It is being increasingly...