A month ago, I wrote a piece for CommonWealth about how both of Boston’s mayoral hopefuls were mining communities of color for votes. Marty Walsh and John Connolly had fared equally poorly in these neighborhoods in September’s preliminary, collecting votes in majority-minority neighborhoods at roughly half the rate they did in majority-white neighborhoods.
I did some followup work on this after the November 5 election, and found that one of the main reasons Walsh topped Connolly was because he topped Connolly by 20 points in majority-minority precincts, despite trailing by 11 in majority-white precincts.
The magnitude of these differences really pops visually. At the top of the page, I mapped the candidates’ vote margins in majority-minority precincts; above, vote margins in precincts won in September by Felix Arroyo, John Barros and Charlotte Golar Richie – the three minority candidates who endorsed Walsh.