On September 23, 2014, University of California political scientists published a 54-page study of “moderate” voters. Extensive survey research, covering 134 issues, reveals that “moderate” voters are typically people who have a mixture of “extreme left” and “extreme right” views. They end up looking like moderates because of the eclectic mixture of views from both sides of the spectrum.
Here is an article about the study. Thanks to Thomas Jones for the link.