Guy wanted to do a survey of last election. I said NO and now blocked.  Don't believe anyway. I wouldn't have answered but as I was leaving a MSG for call previously made, this incoming call occurred. I thought it was the party I was leaving the voice msg for trying to call me back right away. Turned out not to be.

Unknown and unsolicited call.  Unanswered, stayed on the line just long enough for the message machine to collect a null message.  

I am wondering, after considerable research, if the folks getting these calls are victims of one of the data breaches. Not wanting to give too much up but the research for this and a handful of other numbers conclude in one of the IRC addresses where credit and other stolen information is easily available for a price.

I answered the call on the second ring.  No response from the caller, I hung up.

I get these all the time, never answer.  Just keep forgetting toad them to my do not call list.
I live in MN and I know that in the town of Glencoe is a coupon and rebate clearinghouse.  Perhaps it is something else they do.