Beto O'Rourke's got something that is capturing everyone's attention — including his fellow 2020 Democratic presidential candidates, some of whom went out of their way to address him.
Driving the news: Sens. Kamala Harris, Elizabeth Warren and Cory Booker all sent fundraising emails to their supporters specifically citing Beto's presidential bid. (The subject line of Harris' email was simply: Beto O'Rourke.) They haven't done this for other presidential candidates, except Harris' team which sent a similar note when Bernie Sanders announced.