Here's an interesting tidbit about the Boston City Charter. If one of the four at-large city councilors were to leave his or her position, the candidate who finished fifth in the election, if willing and eligible, would become the fourth at-large city councilor. What does that mean? Let's say, hypothetically, At-Large City Councilor Ayanna Pressley were to become a US congresswoman and vacate her city councilor seat. Under those circumstances, current At-Large City Councilor Stephen Murphy -- who just lost his seat -- could rejoin the council, provided it happened in the next two years.