Trump national prayer breakfast
President Donald Trump addresses the National Prayer Breakfast Feb. 2, 2017 in Washington, D.C. Win McNamee/Getty Images

President Donald Trump just started his term, but some voters are ready to end it. In a Public Policy Polling survey released Thursday, 40 percent of respondents said they supported impeaching the Republican — including 3 percent of people who voted for him.

"Usually a newly elected president is at the peak of their popularity and enjoying their honeymoon period after taking office right now," Public Policy Polling president Dean Debnam said in a news release. "But Donald Trump’s making history once again with a sizeable share of voters already wanting to impeach him, and a majority of voters wishing they could have Barack Obama back."

When broken down further, the poll data — which comes from a survey of 725 registered voters questioned Monday and Tuesday — showed supporters of Democratic presidential nominee Hillary Clinton and Green Party candidate Jill Stein were the most fervent proponents of impeaching Trump. Trump's supporters were the most ardent opponents of impeachment, with 93 percent advocating for him to stay in office.

Overall, 12 percent of respondents said they weren't sure whether they supported or opposed Trump's impeachment.

A few campaigns working toward Trump's impeachment have already begun. For example, more than 570,000 people have signed an online petition through Free Speech For People and calling for Congress to start an investigation into whether Trump should be impeached.

The two groups wrote on their website that Trump should be impeached for business conflicts of interest stemming from his property and deals in countries like Turkey because they violate the emoluments clause prohibiting the president from accepting benefits from other foreign governments.

"He has chosen to profit from the presidency at public expense, in violation of the United States Constitution," the petitioners wrote online. "The violations, the corruption and the threat to our republic are here now."

Conservative radio host Hugh Hewitt recently told Yahoo journalist Katie Couric he thought Trump could be impeached if the House of Representatives became a Democratic majority after the 2018 midterms. "President Trump has to be aware of the constitutional thin ice on which he skates," Hewitt said, according to the Hill. “If you abuse power, if you do anything — you don’t have a lot of goodwill in the reservoir."