Jesus was not collecting sheep.  So whether the numbers decline in one and raise in another has nothing to do with Jesus's teachings.   Here are some quotes from high up fundamentalists that attract a lot of followers:
"I want you to just let a wave of intolerance wash over you. I want you to let a wave of hatred wash over you. Yes, hate is good... Our goal is a Christian nation. We have a Biblical duty, we are called by God, to conquer this country. We don't want equal time. We don't want pluralism." 
-Randall Terry, Founder of Operation Rescue