Magellan Strategies for the Ken Buck campaign:
Buck: 46%
Norton: 37%
This survey was conducted using automated telephone touch tone technology. The sample was randomly drawn from a Colorado voter file among households containing at least one registered Republican voter. The response data was weighted to reflect past Republican primary voting demographics from the 2008, 2006, 2004 and 2002 election cycles. The 759 interviews of likely Republican primary voters were conducted on Wednesday night, July 21st between 5:30pm and 8:00pm. This survey has a margin of error of 3.5% at the 95 percent confidence interval.
http://buckforcolorado.com/ken-strong-lead-latest-poll