U.S. Democrats back on 2020 campaign trail after debate attacks on Warren

FILE PHOTO: Democratic presidential candidate Senator Elizabeth Warren speaks as former Vice President Joe Biden debate during the fourth U.S. Democratic presidential candidates 2020 election debate in Westerville, Ohio, U.S., October 15, 2019. REUTERS/Shannon Stapleton/File Photo

WESTERVILLE, Ohio (Reuters) - The Democratic presidential contenders head back to the campaign trail on Wednesday after a debate that featured repeated attacks on surging progressive U.S. Senator Elizabeth Warren and exposed the party's divisions on issues like healthcare and taxes.

While Warren has risen in the past month into a virtual tie with former Vice President Joe Biden in opinion polls atop the Democratic race, most other contenders face an urgent challenge in breaking out of the pack while the political world is riveted by the Democratic-led impeachment inquiry of Republican President Donald Trump.