Cory Gardner Leads in Colorado Senate Race

A new Quinnipiac poll has Tea Party favorite Cory Gardner leading incumbent Senator Mark Udall by 2 percentage points; 44% to 42%. A previous poll by the same concern released April 24 had Udall up by a single point. In the Real Clear Politics average of polls Udall manages to hold a 1 point lead. The two point lead is, of course, within the margin of error so hypothetically the race is a tie.
Update:

Gravis Marketing conducted a random survey on 7/8-7/10 of 1106 registered voters in Colorado regarding statewide candidates. The s results of this survey are accurate at the 95% confidence and carries a margin of error of ±3. Gravis contacted registered voters using automated telephone calls.
Gravis Marketing first surveyed the US Senate race to find that Congressman Cory Gardner (R) leading Democratic Senator Mark Udall 47%-43% with the Libertarian candidate Gaylon Kent taking 6% in the poll. This seat is currently listed as a tossup in the Realclearpolitics.com average and is being seen as a must win race by both parties in order to maintain or take control of the US Senate.