Just a few days ago, Rep. Mike Johnson of Louisiana was so unknown that fellow Republicans had to google his name. Now he’s Speaker of the House. WSJ’s Siobhan Hughes explains his meteoric rise. Further Reading: -Mike Johnson Elected House Speaker, Ending Three Weeks of GOP Feuding  -New Speaker Mike Johnson Made His Name as Cultural Conservative  Further Listening: -Why the House Still Doesn’t Have a Speaker  -The Fight Over Speaker of the House  Learn more about your ad choices. Visit megaphone.fm/adchoices