Lee (UT) 100%
Paul (KY) 99%
Johnson (WI) 95%
Scott (SC) 94% 2014, 2016
Rubio (FL) 91%
Toomey (PA) 90%
Risch (ID) 89% 2014
Coburn (OK) 88%
McConnell (KY) 87% 2014
Cornyn (TX) 87% 2014
Crapo (ID) 86%
Inhofe (OK) 86% 2014
Flake (AZ) 82%
Hatch (UT) 82%
Barrasso (WY) 81%
Sessions (AL) 80% 2014
Coats (IN) 78%
Grassley (IA) 78%
Vitter (LA) 78%
Enzi (WY) 76% 2014
Roberts (KS) 76% 2014
Burr (NC) 76%
Ayotte (NH) 75%
McCain (AZ) 72%
Portman (OH) 72%
Heller (NV) 71%
Corker (TN) 70%
Graham (SC) 70% 2014
Boozman (AR) 68%
Chambilss (GA) 66% 2014
Moran (KS) 66%
Thune (SD) 65%
Shelby (AL) 65%
Isakson (GA) 64%
Johanns (NE) 62% 2014
Fischer (NE) 59%
Blunt (MO) 58%
Kirk (IL) 56%
Alexander (TN) 53% 2014
Wicker (MS) 50%
Cochran (MS) 47% 2014
Hoeven (ND) 43%
Murkowski (AK) 39%
Collins (ME) 28% 2014
Also, note that Jerry Moran, who as head of the NRSC is in charge of picking candidates to support, is at 66%.
The Tea Parties in the individual states should overrule his choices, because they will be obviously be go-along, get-along moderates like himself.
Thune is the one that jumps out at me. After taking out Tom Daschle, he has steadily slid leftward, become more statist.