No, if you listen to the beginning of the spam call, it states they are the "Institute of Voter Attitudes and Public Policy" which is affiliated with a conservative brainwash institute, so it's definitely nothing to do with Udall.   It's a push poll that front loads the question with a lie.  Basically an unethical out-of-state organization.   You can ignore the calls all you want but the computer will continue to call you every 5 minutes.   Better to pick up the phone and set it aside.

Received call; didn't answer due to Caller ID name info of only city/state ("Denver    CO" in this case) is always somebody I don't want bothering me; then blocked future calls from the number.   I did call the number (after blocking my outgoing caller ID info) and all I got was a recording that said noone was available to take my call.    

Want to stop repeated telescam phone calls?
Try these alternatives:

1.  Do not answer the phone if you see an unknown number on your Caller ID ... let it go to answering machine or voicemail.  Many telescammers hang up after 3 rings.

2.  If you have a smartphone, get one of the inexpensive or free phone blocker apps at your online app store, and learn how to use it.

3.  If your cel is not "smart", read the manual to learn how to set up a "group".  Assign the scammer's phone number to that group.  Also assign a "silent ring" to that group.  You will not hear future calls from that number.

4.  Google NoMoRobo, and visit their site, to see if your phone system is compatible with that system.  (It may or may not be compatible).

5.  Contact your phone service provider.  They may have a facility or method to allow you to block numbers.

6.  If you buy things online, you might want to google "Amazon phone blocker" to see what devices or apps Amazon has to offer for landlines or smartphones. Similar devices are for sale on eBay and other online stores.
http://goo.gl/cdPm8O

I have rec'd calls from 720-465-6888 every couple of minutes...each time to go to answer the call there is no answer on the other end of the call.  I call the number back and it's an automated answering machine..no way to talk with any one.  This is harassment and needs to stop!!!!  Your help is greatly appreciated.  

Calls incessantly from 6pm to 9pm every five minutes.  Apparently from the Democrats for Udall campaign