Republican leader Kevin McCarthy failed in marathon voting Tuesday to become House speaker, a historic defeat with no clear way out as House Republicans dug in for a long, messy start for the new Congress. To win the gavel, McCarthy needs a majority of the members-elect who are present and voting. But because the GOP holds only a five-seat advantage, a small number of defections is so far stopping McCarthy from gaining the office he's long sought.  The House can conduct no other business until a speaker is chosen. For the first time in a century, the vote is requiring multiple rounds. Steve Roberts discusses on what happens next.