Given the uptick in media attention this race is receiving, such a persistent, pesky report could be devastating to a prohibitive front-runner like Castle. His camp insists it’s untrue. Reached today by Townhall.com, Castle’s Congressional press secretary Kate Dickens categorically denied the rumor, calling it old, “made up” and “ridiculous.” Dickens said Rep. Castle will remain a Republican for the remainder of his career.