The Most Expensive Senate Primary Vote in History: Texas Brief

A Record-Breaking Primary

If you need to gauge how high the stakes are in today’s US Senate primary election, follow the money: It’s the most expensive US Senate primary in history, with more than $128 million spent on ads alone.

That number will grow if the races go to a runoff, which is possible for Republicans and Democrats in each of their party-defining races, Kate Ackley, Alexandra Samuels, and Greg Giroux report.

Most of the spending ($98 million) has been on the Republican side, with mega-donors and business groups trying to help incumbent Sen. John Cornyn ...