Philadelphia re-elected its mayor, Jim Kenney, last week. As usual, the Democrat won resoundingly, though his share of the vote dropped from 85% to 80% since 2015. As this map shows, the losses were mainly in Northeast and South Philly

In the City Council races, the big news was the election of an at-large member from the Working Families Party, a socialist faction that was contesting the Philly elections for the first time. Candidate Kendra Brooks took one of the two at-large seats reserved for the non-majority party, both of which had been held by Republicans since they were created in 1951.

This map shows the relative strength between the Republicans and the WFP. The radicals were strongest in the gentrifying areas surrounding Center City, but also showed some strength in parts of North and West Philly.

The scale here is by percentage points, not a percentage of the total GOP+WFP vote. In many of these divisions, that means the difference between 1% and 2%.