(CNN) Mark Sanford survived cheating on his wife, but he could not survive cheating on Donald Trump. Sanford became one of the President's most vocal critics, hammering Trump from the beginning of the chief executive's term. Republicans want unity in the party because they believe in the Trump agenda, and they realize that politics is a team sport. Follow CNN Opinion Join us on Twitter and FacebookSanford's loss should be a wake-up call for Republican members of Congress who find themselves out of step with the Trump policy agenda. The Mark Sanford's of the world learned last night that when you vote against the Trump agenda, Republican voters in your district might just tell you to take (another) hike.

Source: CNN June 13, 2018 16:52 UTC