Let's look at the real article, instead of taking the word of someone at the Heartland Institute:<quoted text>
One of the most commonly cited studies of the “97 percent” was conducted by a University of Illinois professor and a graduate student ... To get to the magic 97 percent in the affirmative to both questions — in the answers to questions even many skeptics would answer “yes”— the study’s authors had to whittle down the survey to a paltry 79 “climate scientists...
"Between December 2008 and July 2009, we collected the number of climate-relevant publications for all 1,372 researchers from Google Scholar (search terms:“author:fi-lastname climate”), as well as the number of times cited for each researcher's four top-cited articles in any field (search term “climate” removed). Overall number of publications was not used because it was not possible to provide accurate publication counts in all cases because of similarly named researchers. We verified, however, author identity for the four top-cited papers by each author.
To examine only researchers with demonstrated climate expertise, we imposed a 20 climate-publications minimum to be considered a climate researcher, bringing the list to 908 researchers..."