like the AP poll (http://surveys.ap.org/data/GfK/AP-GfK%20Poll%203%20Topline%20FINAL%20trunc.pdf), Gallup's presidential surveys are conducted with a sample size no fewer than 1,000. their data (http://www.gallup.com/poll/111436/Gallup-Daily-Obama-Keeps-Lead-Among-Likely-Voters.aspx) suggests a significant lead, at least greater than the sampling error. but it is always better to have more than one source. Rasmsussen, reports (http://www.rasmussenreports.com/public_content/politics/election_20082/2008_presidential_election/daily_presidential_tracking_poll) similar figures, with a full sample of 3000 people over three night. but i guess it depends on what you a consider a wide margin.
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timeasmymeasure
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Date: 2008-10-24 07:48 pm (UTC)