The best thing about Kamala Harris is she doesn’t keep you waiting.

Harris’ tendency to strike first has become her defining political trait. As state attorney general, she moved quickly in dramatic moments—to rush Prop 30 on the ballot and to establish same-sex marriage almost immediately after a court ruling.

And as a Senate candidate, she seized the initiative—and the race—by jumping very early into the race to succeed Barbara Boxer.

So it shouldn’t have come as a surprise when, during the U.S. Senate Judiciary Committee confirmation hearing for Supreme Court nominee Brett Kavanaugh, Harris wasted no time. She interrupted the committee chairman just a few seconds into his opening, making her the first Democrat (though not the last), to challenge the legitimacy of the hearing.

Moving decisively and quickly is an important political trait. Harris is not impulsive, like Trump. But she also doesn’t dally and delay, as President Obama often did.

Harris is running for president. There are questions about her experience. There are questions about her breadth of knowledge of policy and the world (she’s great on legal issues, but in the past has seemed out of her depth on foreign policy and other subjects). But she seems to have the right temperament and decision-making instincts.

And we shouldn’t have to wait long before she starts running. You can bet she’ll be among the very first into the race.