Rumblings from Trump’s base could shape Democrats’ choice for 2020

President Donald Trump’s political base may not be as impregnable as commonly assumed. And that could have big implications not only for the Democrats’ strategy against Trump in 2020 but also for their choice of a presidential nominee.

Detailed new research by the Democratic voter-targeting firm Catalist found that the party’s big gains in the 2018 congressional election were fueled not only by unusually high turnout among voters sympathetic to the party, but also by larger-than-expected defections from the GOP among voters who had backed Trump two years earlier. CONT.

Ronald Brownstein, CNN