Speaker Mike Johnson went from No. 7 in the House Republican leadership to No. 2 in the presidential line of succession. Read more from Politico about his "learning curve." 

Who is the new Speaker of the House Mike Johnson? According to NPR, he is a conservative Christian from Louisiana with a legislative record that includes opposition to abortion rights and same-sex marriages. Johnson, serving in the House since 2016, has been recognized for his commitment to conservative causes and his rapid rise within the Republican ranks.

Johnson is the least experienced speaker of the House in 140 years. Read more from Politico: "55 Things You Need to Know About Mike Johnson."