Among the last-minute donors to Beto O'Rourke in his midterm Senate campaign against Sen. Ted Cruz was venture capitalist Josh Kushner, who gave $2,600 on Oct. 25, 2018.

Why it matters: He's the younger brother of Jared Kushner, whose boss, President Trump, is being challenged for re-election by O'Rourke.

Go deeper: DCCC, RNC break fundraising records for month of February