Who called from 6073531775

Have received two calls over the past three days. Left no message.

I just picked up a call from this number and there was nobody on the other end,

Called twice in one hour. Left no message.

What did they want?

Seems to be a political survey.  The woman was nice, didn't ask for any personal information other than the town I live in.  When I told them the town, she looked it up and apologized saying they were looking for a different area in the same area code.  In this rare case, they weren't trying to push or sell anything.