Many Democrats will tell you that there has rarely, if ever, been a more menacing or evil presidential candidate than Donald Trump. “Trump is the most dangerous major candidate for president in memory,” pronounced Vox’s Ezra Klein two weeks ago. With a consensus now emerging that the real estate mogul is the likely GOP nominee, it would stand to reason that the most important factor for many Democrats in choosing their own nominee is electability: meaning, who has the best chance of defeating the GOP Satan in the general election? In light of that, can Democrats really afford to take such a risky gamble by nominating Hillary Clinton? In virtually every poll, her rival, Bernie Sanders, does better, often much better, in head-to-head match-ups against every possible GOP candidate. Here, for instance, is a compilation of how Clinton does against Ted Cruz in recent polls: She trails the Texas senator in all but one poll, and in the one poll she leads, it is by a paltry 2 points:

By stark contrast, Sanders leads Cruz in every poll, including by substantial margins in some:

A similar story is seen in their match-ups against Trump. Although they both end up ahead in most polls, Sanders’ margin over Trump is generally very comfortable, while Clinton’s is smaller. Clinton’s average lead over Trump is just 2.8 percent, while Sanders’ lead is a full 6 points:

Then there’s the data about how each candidate is perceived. Put simply, Hillary Clinton is an extremely unpopular political figure. By contrast, even after enduring months of attacks from the Clinton camp and its large number of media surrogates, Sanders remains a popular figure. A Gallup poll released this week reported that “29 percent of Americans offer a positive observation about Clinton while 51 percent express something negative.” As Gallup rather starkly put it: “Unfortunately for Clinton, the negative associations currently outnumber the positive ones by a sizable margin, and even among Democrats, the negatives are fairly high.” Sanders is, of course, a more unknown quantity, but “the public’s comments about Sanders can be summarized as 26 percent positive and 20 percent negative, with the rest categorized as neutral, other or no opinion.” In fact, the more the public gets to see of both candidates, the more popular Sanders becomes, and the more unpopular Clinton becomes. Here’s Quinnipiac explaining that dynamic in one graph just a few days ago:

This Huffington Post chart, compiling recent polls, shows not only that Clinton is deeply unpopular among the electorate, but becomes increasingly unpopular the more the public is exposed to her during this campaign: