On November 2, Quinnipiac University Polling Institute released a new national presidential poll that places President Obama’s approval rating at 47 percent – up six points from last month’s Quinnipiac poll. The poll also had him at least five points ahead of all the Republican primary contenders, and indicated 49 percent of respondents think the president deserves re-election, up from 42 percent last month. The poll results appear to be positive news for President Obama, but demographic data shows that Democrats were sampled more than Republicans by a 13 point spread. This calls into question how random sampling could appear to favor one party over another, and whether the Obama administration should be confident in embracing the poll results.
Presidential Approval Poll Analysis
Quinnipiac University surveyed 2,294 registered voters via random phone calls to landlines and cell phones between October 25 and October 31. An additional sample of 869 likely Republican primary voters was surveyed regarding likely primary votes. Quinnipiac University identifies likely voters based on self-identified voter registration. Weighting was used to adjust raw data in accordance with data from the most recent Census. Only demographic criteria was weighted, including gender, age, education, race and region. The margin of error for the general voters was +/-2.1 points, and for the Republican primary sample was +/-3.3 percent.
http://www.decodedscience.com/should-obama-celebrate-rising-approval-new-poll-shows-six-point-jump/4973