New Oklahoma GOP chairman challenges some elected Republicans, including James Lankford

As Republicans continue to dominate Oklahoma politics, the state's new GOP chairman is challenging elected officials within the party. 

Oklahoma Republican Party Chairman John Bennett is backing a primary challenger to U.S. Sen. James Lankford and has publicly criticized other prominent elected Republicans. 

Bennett said he is not backing Lankford's primary opponent in his capacity as state GOP chairman, but it's nearly unheard of for any party leader to get involved in primary contests, let alone to oppose an incumbent.