The poll showed 43 percent now support the start of impeachment proceedings, up 7 points from a weekend survey. Meanwhile, opposition to impeachment fell 6 points to 43 percent.
Support for impeachment grew among Democratic and Republican voters alike. Democratic support reached 79 percent, a 13-point jump. Meanwhile, the number of Republicans backing impeachment doubled to 10 percent.
Among voters who back the start of impeachment proceedings, 59 percent said Trump committed an impeachable offense, according to the poll. That marks a record high since Morning Consult began asking the question from May 2017.
The White House on Wednesday released a partial transcript of Trump's call with Ukraine President Volodymyr Zelensky. The House Intelligence Committee then released the whistleblower report on Thursday, showing Trump sought to enlist Ukraine's help in the 2020 election by mounting a corruption investigation against former Vice President Joe Biden.