(CNN) Nearly two-thirds of registered voters think President Donald Trump committed crimes before assuming the presidency, according to a new poll taken in the days after former Trump lawyer Michael Cohen testified to Congress.

According to a Quinnipiac University poll released Tuesday, 64% of registered voters said Trump had committed crimes before entering office and nearly half of voters -- 45% -- think he committed crimes while serving as President.

Despite Trump's massive popularity in the GOP, even a third of Republicans said Trump had engaged in criminal activity before his presidency. The poll showed that 89% of Democrats and 65% of independents thought Trump had committed crimes before taking office.

Republicans were the only demographic group without a majority who believed Trump broke the law before he was President.

Voters were more split on whether Trump had committed crimes during the presidency -- 45% said they think he has and 43% said they think he has not engaged in criminal activity.

Read More