That CNBC poll was an online poll, not a real poll. Later in the evening it had Biden ahead.
Of the two actual polls I’ve seen, Ryan won the CNN one and Biden won the CBS version of the same.
Personally, I think Biden was so offputting that Ryan wins by default.
CBS was an online poll as well. Only two polls that I’ve seen so far that were not online polls are CNN and Pew. Both had Ryan winning.