I received two calls from this number in the past two days. One, yesterday, at 8:14 PM, and another, today, at 6:11 PM. I'm also on the Do Not Call list, but we all know how effective that is!
Called today and asked if there was a registered voter in the household who wanted to take a poll. I told them "no" and he thanked me and hung up. Polite but annoying.