The exchanges captured two sides of a candidate who is the central figure in one of the nation’s most consequential Senate races. El-Sayed would be the country’s first Muslim senator, and he’s crisscrossing the state to counter a Republican effort, fueled by tens of millions of dollars, to portray him as a dangerous radical. But he has also embraced his confrontational side by mocking and taunting Trump and Rogers.

“If they want to make me the main character in the midterms, I’m not shying away from it,” El-Sayed said in an interview. “Run against me. See how well that works out for you.”