Trump impeachment manager Rep. Adam Schiff, D-Calif., speaks at trial of Donald Trump in U.S. Senate

Last May, when U.S. House Speaker Nancy Pelosi was still reticent to impeach Donald Trump, she explained that Trump was “self-impeaching.” What Pelosi likely meant was that Trump was digging his own political grave, hurting his chances for reelection in 2020. Pelosi’s prediction seems to be coming true now, as the latest polls indicate that the top six Trump challengers for the general election — Joe Biden, Elizabeth Warren, Michael Bloomberg, Bernie Sanders, Amy Klobuchar and Pete Buttigieg — all beat Trump in head to head match-ups. This latest good news for Democrats comes as Trump has been impeached (“for life,” as Nancy Pelosi brilliantly said), and is now undergoing a trial for removal in the U.S. Senate.