Kamala Harris was the big winner of the first round of Democratic party debates in the US. This week, her poll numbers surged and so did donations to her campaign. But as Lauren Gambino in Washington notes, it was bad news for the frontrunners as Joe Biden and Bernie Sanders faltered. Also today: Daniel Boffey on the new cast of characters taking over the EU’s top jobs. Help support our independent journalism at theguardian.com/infocus