After posting that map of Philadelphia’s presidential votes the other day, I wanted to see how much had changed since 2012. So I came up with this:

You’re still looking at a vast sea of blue, but the differences jump out at you. Clinton and Obama both won the city easily, but Obama won it much more thoroughly. Trump won wide swathes of the 45th ward where Obama had carried every single division four years earlier. Trump’s victories in the Northeast were also much deeper and widespread. Even in the dark blue areas of North and West Philly, we can see that Obama was the stronger candidate. Where Clinton had three divisions with 100% of the votes for her, Obama had twenty-seven. The pattern held throughout the area. Clinton didn’t lose much of Obama’s totals, just a handful of votes in each division. But it was enough.