The views of Democrats on the question haven’t changed much; they’re about 70 points more likely to say the FBI is doing its job than to say that the FBI is biased. Republicans, though, went from a six-point gap in favor of bias to a 22-point spread. More than half of Republicans now think that the FBI is actively biased against Trump.

Political independents often mirror the overall numbers in polls like this (since Democrats and Republicans are often at the poles). Since February, the edge for “doing its job” has fallen among independents from 50 points to 30 points. Three in 10 independents think that the FBI is biased against Trump, just under the overall figure.

This isn’t the half-and-half split Harrison imagines, but it does suggest a more stark divide among American adults than might have been expected.