James Lankford - 47%
T.W. Shannon - 17%
Kevin Crow - 3%
Other/Undecided - 33%
Poll of 500 likely Republican voters, taken February 10-12, with a MoE of +/- 4.9%
Randy Brogdon was not included because at the time of the poll, he was not in the race.
The only other publicly released poll on the race was conducted January 30th-February 1st, and had Lankford at 54%, Shannon at 18%, and Jason Weger at 1%.