Here is the list: Most are consistently RINO.
Alexander (R-TN) Burr (R-NC) Coats (R-IN) Coburn (R-OK) Collins (R-ME) Corker (R-TN) Flake (R-AZ) Graham (R-SC) Hatch (R-UT) Kirk (R-IL) McCain (R-AZ) Murkowski (R-AK) Rubio (R-FL) Republicans Not Voting: Vitter (R-LA)
Note that Rand Paul was not among them.