I came up this evening with another way of breaking down the 2016 black electorate:
This chart does a few things that you don't usually see:
- It distinguishes between Clintonites - general election Clinton voters who also supported her in the primaries - and Democrats - general election Clinton voters who didn't support her in the primaries. I based this proportion on typical Yougov / Economist polling, which gave Clinton about 68% of black primary voters.
- As always, I account for non-voters. This was just a matter of subtracting all black voters from the eligible voting black population as given by Census data.
- Finally, I made a basic attempt in this chart to account for disenfranchised black voters (D) - about 1 out of every 13 eligible black voters. I did this with the assumption that the disenfranchised populace would vote in similar proportions to the enfranchised populace, EG if half of the enfranchised stayed at home I assume that around half of the disenfranchised voters would stay at home too. This isn't an entirely reliable assumption, but we don't have any data that's more specific and it's better to at least make some minimal attempt to account for their preferences.
The big takeaway here touches on a point I made earlier today: the more you dig into the preferences of black voters, the weaker their support for Clinton actually appears. As far as I can tell, the number of black voters in the general election who supported Clinton and might not have voted for anyone else barely cracks the 30% mark. That even includes black voters who wanted to vote for her but couldn't because they were disenfranchised. The rest of all voters either preferred to stay at home, support Trump, or support a third party or independent candidate.