Albany Mayor Jerry Jennings’ announcement last night that he will not seek a sixth term in November came at a time when the city’s Democratic machine is already in motion as it gears up for a primary between announced candidates Kathy Sheehan, the city treasurer, and 2009 mayoral candidate Corey Ellis. Barbara Smith of the Albany Common Council spoke with WAMC’s Alan Chartock as the city prepares for its first new administration in 20 years.