WASHINGTON — Vice President Mike Pence was doing just fine in the background. Then a Democrat called him “decent.”
In their search to present themselves as the antidote to the Trump administration, a raft of Democratic presidential hopefuls are targeting Mr. Pence, an evangelical Christian and comparatively sedate figure who has showcased President Trump’s hard-line policies to the rest of world with a smile.
But a compliment last month from Joseph R. Biden Jr., the former vice president on the verge of announcing his own candidacy, thrust Mr. Pence into the 2020 conversation.
After Mr. Biden referred to him during a speech as a “decent guy,” several Democrats lined up to say the opposite:
Senator Elizabeth Warren of…