Ted Cruz has few friends on Capitol Hill, and the establishment is starting to line up behind him to take out Donald Trump.
Former Florida Governor Jeb Bush and South Carolina Senator Lindsay Graham have endorsed Cruz, and Wisconsin Governor Scott Walker and Florida Senator Marco Rubio have hinted that they also might come along.
Cruz's base of support comes from conservative women, educated evangelicals, older voters and nationally syndicated conservative radio talk show hosts. Mark Levin and Glenn Beck have endorsed him, and he gets strong support from Rush Limbaugh.
Though Cruz has a friend in right-wing media, Donald Trump is still winning. Is conservative talk radio, once a powerful force in Republican politics, losing its influence? For answers, we turn to Darryl Parks, a media consultant and former talk radio host.