A special shoutout for holding down 10 mayorships at once!
Become the mayor of ten locations at one time and be awarded this badge.
Tip: Find locations that you can checkin on a daily basis. Also look for locations that do not have a mayor who is deeply entrenched, someone with tens of checkins.
Confirmed: After getting the badge if you go below the 10 mayorships to get the badge you still keep this badge.