I'm UK-based and in the past month I've been on 4 different conferences and met 5 Americans, 3 of whom were here visiting and 2 of whom had moved to the UK permanently.
Naturally, American politics came up as a conversation topic, and the one thing that stood out between all 5 people I met, was that they were all opposed to Hillary Clinton getting the Democratic nomination.
More interestingly, this feeling seemed to cut across the political divide.
2 of the people I met would be described as "swing voters". One of these 2 openly described herself as such, saying that she loved and has twice voted Obama but would not vote and never has voted for a Clinton (she voted for all the Bushes at all times -- which seemed an odd choice coupled with Obama) and said she'd rather see Joe Biden get the nomination and would then vote for him. The other said she previously Republican, referencing Reagan, but then has always voted Democrat, but was vehemently against Hillary, even though she loved Bill; and was adamant that it must not be another Clinton, not only for the name but because she was "untrustworthy" and that she'd rather see "Biden, Sanders, or even Fiorina, anyone but Hillary" (at which point she coughed and said 'oh and of course Trump' to which we all laughed).
2 others were Democrats and both of them also said they'd rather Hillary not get the nomination; both were rooting for Bernie Sanders and were excited by the fact that Jeremy Corbyn had just won here in the UK.
The other person I spoke to was a Republican voter, who always was vehemently opposed to Hillary Clinton, perhaps more obviously, but was also anguished with the GOP's options.