ADVERTISEMENT
Cornyn had previously served as chairman of the National Republican Senatorial Committee (NRSC). Thune had reportedly been considering a challenge to Cornyn for the whip spot.

Prior to serving as Conference chairman, Thune served as vice chairman of the Conference and also was chairman of the Senate Republican Policy Committee. 

Meanwhile, the race to become the next chairman of the NRSC has begun to heat up. Sen. Jerry MoranGerald (Jerry) MoranAn unlikely bipartisan solution on energy and taxes Alexander struggles to find health-care breakthrough Overnight Tech: House Intel to release Russian Facebook ads | Trump tweet on NBC draws backlash | Senators want answers from alleged robocall king | Twitter reverses on Blackburn ad MORE (R-Kan.) is running for the job and Sen. Rob PortmanRobert (Rob) Jones PortmanSenate GOP reveals different approach on tax reform GOP senators: Moore should step aside if allegations true Senate set for clash with House on tax bill MORE (R-Ohio) is also considering a bid.