Two-time presidential candidate and former Texas Gov. Rick Perry has joined the cast of the upcoming season of "Dancing with the Stars" in an effort to promote veterans' issues. Perry, who will compete against Olympians and actors, has reportedly only danced four times in public and is not that good. Republican Sens. John McCain of Arizona and Marco Rubio of Florida have survived primary challenges and move on to the November election, but will Trump's lagging popularity be a drag on these down-ballot races? Plus, with less than a month until the first presidential debate, Trump and Clinton are preparing in very different ways.