William "Bill" McInturff is a Republican pollster, the co-founder (and partner) of Public Opinion Strategies, and, along with Peter D. Hart, the lead pollster for the NBC News/Wall Street Journal polling series for the past decade. He was the lead pollster for John McCain in his 2008 bid for the office of United States President. He has built Public Opinion Strategies into the largest Republican polling operation, representing 19 American Senators and over 50 Congressmen. His work includes testing the Harry and Louise commercials that were run against the Clinton health care plan of 1993.
He was also responsible for the push-polling in the presidential campaign of 1996 (under the supervision of Paul Manafort) which was believed to lead to the defeat of Texas Attorney-General Dan Morales. This was funded by the Tobacco Institute and Philip Morris. 
During a Q&A session on 18 October 2013 on CSPAN Mr. McInturff explained why a negative campaigning works against the healthcare law:
"The way our brains work, if you're starting at a very weak base, it's easier to hear negative information that reinforces what you believe in a way that pushes it off the cliff than it is to hear so much new positive information that you suddenly change your opinion. The folks who support Obamacare have this problem, which is it will be easier for people to believe the negative than to believe the positive and they will have to deliver the positive in large enough numbers to restructure opinion" 
Bill resides in the Washington, D.C. area and has two sons named William Adam and Drew McInturff. Both are in their 20s and work in professional baseball.
- "Public Opinion Strategies » Partners and VPs". Pos.org. 2013-08-13. Archived from the original on 2014-06-17. Retrieved 2014-06-29.
- "Poll: Obama's rating at all-time high - politics - White House | NBC News". MSNBC. 2009-03-03. Retrieved 2014-06-29.
-  Archived March 3, 2009, at the Wayback Machine.
- "Poll Measures Americans Trust Public Opinion | Video | C-SPAN.org". C-spanvideo.org. Retrieved 2014-06-29.
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