Mangling the numbers

In his article about politicians who misquote the Founding Fathers, W. Post reporter David Fahrenthold said a search covering the last two years "turned up at least 30 instances of politicians mangling the words ... of the country's founders." Yet, eight of the nine politicians he cited were Republicans. Was there not one other Democrat whom he could cite? And if there were no other Democrats among those 30-plus instances, wouldn't a better story have been that Republicans are 30 times more likely to screw up a histpric quote than Democrats?