(CNN) During the course of President Donald Trump's administration, a minority of Americans have been for impeaching him. Just this past May, CNN found that 41% of Americans wanted to impeach and remove the President from office.

But as House Democrats launch a formal impeachment inquiry into the President, that percentage could easily move upward, given that many Democrats were not for impeachment previously may follow the lead of Democrats in Congress.

A clear majority, 72%, of Democrats and Democratic-leaning independents were for impeaching and removing him in our May poll, but 21% were against it. That 21% is considerably higher than Trump's 8% approval rating among Democrats and Democratic-leaning independents. Meanwhile, the 72% in favor of impeaching and removing Trump was quite lower than the 89% who disapproved of his job in office.

This 72% is also small considering how many Democrats wanted to investigate Trump. In the poll, 88% of Democrats and Democratic-leaning independents said that congressional Democrats were investigating Trump the right amount or too little. This 88% is nearly equal to the 89% who disapproved of Trump.

In other words, there was this chunk of Democrats who disapproved of Trump and wanted him investigated, but they weren't yet willing to call for impeachment.

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