Republicans hold 47 votes in the Senate and if they win the majority, that could further boost Cornyn's chances. After all, the NRSC chairman would be given much of the credit for electing more Republicans to the Senate.
Both Thune and Cornyn are reasonably well-liked in the GOP Conference. But Thune could be a formidable opponent, given that lawmakers already expect to at least gain seats, if not be competitive for the majority.
Rep. Elijah Cummings, D-Md., right, hugs Harold Schaitberger, General President of the International Association of Fire Fighters, after the Congressman spoke at the IAFF's Legislative Conference General Session at the Hyatt Regency on Capitol Hill, March 9, 2015. The day featured addresses by members of Congress and Vice President Joe Biden.