"The GOP under Donald Trump's thumb is now positioning itself outside of the constitutional order," the Maryland congressman said Sunday.
Most Americans approved of the president until late August, when a political see-change saw a majority disapproving for the first time.
A poll prepared for the former president's Make America Great Again Committee shows him leading in five key swing states.
Sixty-three percent of voters said they disapprove of Trump's performance, making him one of the lowest-rated presidents in U.S. history.
While Rasmussen has often given Trump better job approval ratings than other pollsters, Americans are divided on Trump's role in last Wednesday's riots at the capitol.
Only George H.W. Bush, Jimmy Carter and Lyndon B. Johnson had lower approval ratings on their 1,425th day in office.
Trump has a lower average approval rating than his immediate predecessors, George W. Bush and Barack Obama, after their first terms.
"The polls are looking great," the president's son told host Sean Hannity, adding that he sees "more enthusiasm going into 2020 than I did in 2016, and we're going to win."
In addition to the significant disapproval of Trump's coronavirus response that is shown by the polls, his overall approval rating as president has decreased over the past month.
Conducted from April 1 to April 14, the survey asked 1,017 U.S. adults if they approved or disapproved the way the president is handling his presidency.
Former White House Press Secretary Sarah Huckabee Sanders claimed the Democrats made one of their "dumbest political moves" ever by impeaching President Donald Trump, while a new Gallup poll shows Trump with his highest approval rating of 49 percent.
On the three-year annivesary of the election of President Donald Trump, averages of approval polls have consistently shown a majority of Americans disapprove of the job he is doing.
The results of a Washington Post-ABC News poll released Tuesday showed four Democratic presidential contenders winning by more than 10 percentage points in hypothetical match-ups against President Donald Trump.
With 270 Electoral College votes required to win the presidency, the map shows a Democratic challenger pulling 356 votes, a comfortable 174-vote lead over Trump, based on the president's state-by-state approval ratings.
The president's supporters and detractors appear increasingly divided following the impeachment inquiry announcement.
Trump attacked one of the polls as "the worst and most inaccurate poll of any taken prior to the 2016 Election" in a tweet on Tuesday.
Most Americans—56 percent—would "definitely not vote" for Trump, according to a new Washington Post-ABC News survey.
"Marist/NPR/PBS Poll shows President Trump's approval rating among Latinos going to 50%," Trump tweeted on Tuesday.
If, theoretically, Ocasio-Cortez were to run against Trump, she might put up a good fight, according to a new Rasmussen Reports survey.
Shifts in personal attributes were being driven by the leanings of independents, the poll suggested.
The president's former lawyer pleaded guilty to campaign finance violations.
The president shared the results of one poll, saying he was "winning on every front."
Opposition has been growing to the Trump administration's policy of separating families at the border.
The president has equaled his predecessor's rating 18 months into his first term.
The president has faced a challenging time.