Today, Rubio looks good. A 10 point lead in the Redfield, Wilton poll, the same 10 point lead in the political Matrix poll, but only a 2 point lead in the St. Pete poll. All conducted at the end of August. With more than a year to go, anything can happen. Which poll is correct, hard to tell. That's were averaging comes into play. Rubio averages out to roughly a 7 point lead. That's understandable at this point as Rubio is the incumbent and has the higher name recognition.
Being these polls are 3 weeks old, they basically mean nothing outside of giving us an idea where the race stood at the end of August.