<Li> At - large . Ryan Zinke (R), until March 1, 2017 <Ul> <Li> Greg Gianforte (R), from May 25, 2017 </Li> </Ul> </Li> <Ul> <Li> Greg Gianforte (R), from May 25, 2017 </Li> </Ul> <Li> Greg Gianforte (R), from May 25, 2017 </Li> <Ul> <Li> 1 . Jeff Fortenberry (R) </Li> <Li> 2 . Don Bacon (R) </Li> <Li> 3 . Adrian Smith (R) </Li> </Ul>

When does a session of congress begin and end