Ted Cruz remains a conservative favorite in 2016. In 2012, the establishment backed his Senate opponent in Texas, then Lt. Governor David Dewhurst. The conservative grassroots backed Cruz and pushed him over the finish line. Cruz has since remained a favorite of the grassroots with a continually antagonist relationship with the Republican establishment. In 2010, Rand Paul, before Cruz, was a grassroots favorite. The Republican Establishment backed his rival, Trey Grayson. Paul rallied a coalition of conservative grassroots and Ron Paul acolytes to trounce Grayson and win the Kentucky Senate seat. Since then, Paul has wobbled between maintaining grassroots support...