Washington (CNN) A majority of US adults support the impeachment and removal of President Donald Trump from office, a Gallup poll released Wednesday finds, continuing a trend of recent surveys that have found increased support for the Democratic-led effort.

Fifty-two percent of Americans support impeaching and removing Trump from office, while 46% disagree. That's a 7-point increase from when Gallup asked the question in June about impeachment and removal after former special counsel Robert Mueller's investigation into Russian interference in the 2016 election.

Support for impeachment among Democrats and independents is at 89% and 55%, respectively, with independent support climbing 9 points since June. Republican support remains low -- 6% back the impeachment effort in the new survey, down a percentage point from four months ago.

Trump's approval rating has remained steady at 39%, Gallup found. The poll also revealed that the approval rating of Congress is now at 25%, up from 18% before House Speaker Nancy Pelosi announced the impeachment inquiry in September.

The level of support for Trump's impeachment is much higher than it ever was for former President Bill Clinton and above that for former President Richard Nixon in all but a final poll taken before the 37th president's resignation, according to the Gallup survey.