From Nate Silver:
A new CNN poll finds that 55 percent of voters have a negative view of the Republican Party, tied for their second-highest unfavorable score since CNN began asking this question in 1992. […]
The news for Democrats is not any better. Some 49 percent of voters now hold a negative view of the party, according to the poll. […] The combined unfavorable score for both parties — 104 percent — is also a record, and represents the first time that the figure has been above 100.
Silver suggests “A credible independent bid for the presidency is always a long-shot, but might be more viable under these conditions,” but I don’t see why that would be. Who cares about the combined unfavorable score for both parties? If anything, that’s a sign of increased partisan polarization, which would make it more difficult for an independent candidate to make headway. An interesting trendline would be the percentage of Americans who simultaneously hold an unfavorable view of the Democrats and an unfavorable view of the Republicans, which is not a number that could not add up to over 100%.