Senators
| Senate Republican Leader | |
| Senator Kevin Raye | Washington County Hancock County Penobscot County |
| Assistant Republican Leader | |
| Senator Jonathan Courtney | York County |
| Senate Republican Caucus | |
| Senator Jerry Davis | Cumberland County |
| Senator Walter Gooley | Franklin County Kennebec County |
| Senator David Hastings, III | Oxford County Cumberland County |
| Senator Earle McCormick | Kennebec County |
| Senator Peter Mills | Somerset County |
| Senator Richard Nass | York County |
| Senator Debra Plowman | Penobscot County |
| Senator Chris Rector | Knox County |
| Senator Richard Rosen | Hancock County Penobscot County |
| Senator Roger Sherman | Aroostook County |
| Senator Doug Smith | Piscataquis County Penobscot County Somerset County |
| Senator David Trahan | Lincoln County Knox County Kennebec County |
| Senator Carol Weston | Waldo County |