Sen. John Cornyn’s (R-Texas) reelection campaign announced Monday that he raised more than $3.9 million in the second quarter of the year, surpassing the sum raised by his top primary rival. The haul includes money raised from Cornyn’s campaign and associated Cornyn Victory Fund.

Sen. John Cornyn has established a wide fundraising advantage over his Texas Republican primary opponent state Attorney General Ken Paxton, according to financial figures obtained by Axios. Why it matters: Cornyn is facing a more serious primary threat than any other senator up for election next year — and will need every dollar he can get.