As the returns come in on Super Tuesday, there are two places in Massachusetts to watch as key indicators of where the statewide results could be headed.

Number crunching from David Paleologos of the Suffolk University Political Research Center finds that Lunenburg and Waltham have been nearly perfect bellwether communities in the state during the presidential primaries in 2000, 2008, and 2012.

This is especially true for Lunenburg. In the four contests analyzed, the voters in the north-central Massachusetts haven't just correctly place the top three vote-finishers, but they have also been within 2 percentage points of every finish. (This means correctly mirroring 14 separate results.)