Because it's a secret vote, we don't know exactly who voted for Thune to be the Senate Majority Leader, but we know a few of his public supporters.

Thune's election comes at a critical time for the Senate GOP, with the party considering wide-ranging legislation that would tackle tax cuts, immigration, and energy policy. Thune

McConnell is resigning his leadership role after a record 18 years in the position, just in time for Thune to become the Senate majority leader in JanuarySouth Dakota Sen. John Thune was chosen to become the new Republican Senate leader on Wednesday,