Hillary Clinton is perhaps the least popular Democratic presidential candidate of all time. And according to a new Morning Consult report, voters’ dislike can be boiled down to one word: trust.

According to the study, almost half (47 percent) of voters who have an unfavorable view of Clinton don’t think she is trustworthy and almost four in 10 voters (39 percent) say she is corrupt.

As former first lady and secretary of State, Clinton has long been in the public eye and attacks by Republicans over the years have resonated with voters. Their most recent Clinton criticism has been focused on her use of a private email server while secretary of State and her refusal to release transcripts of paid speeches she gave to investment banks on Wall Street.

Related: Clinton and Trump are Historically Unpopular. Here’s Why.

It’s little surprise that 50 percent of Republicans say she is untrustworthy, but that was also the top reason for 47 percent of independents and 39 percent of Democrats who have an unfavorable view of Clinton. Republicans and independents, at 45 percent and 39 percent, respectively, also believe she is corrupt, compared with 25 percent of Democrats.

A little over one-fifth of voters (21 percent) said Clinton changes her positions when it’s politically convenient. At 26 percent, Democrats were slightly more likely to criticize Clinton for that reason, compared with 23 percent of independents and 18 percent of Republicans.

Other main criticisms of Clinton also point to concerns often raised against a career politician: 12 percent of voters say she is out of touch with average Americans and says one thing but does another, and 10 percent of voters said she doesn’t share their values. Democrats (16 percent) were most likely to say she is out of touch with average Americans, while Republicans (14 percent) were most likely to say she doesn’t share their values.

Morning Consult surveyed 2,001 registered voters from May 27-30, 2016, asking voters with an unfavorable view of either Hillary Clinton or Donald Trump to pick the top two reasons they dislike the candidate from a list of more than a dozen negative attributes. Toplines and crosstabs are available here and here, respectively.

You can read about the full study here.