gianforte heading to washington after winning a special election from montana's open house seat. gianforte addressing the shocking incident at the victory rally. >> sick and tired of you guys. the last guy that came in here did the same thing. get the hell out of here. get the hell out of here. >> reporter: apologizing to supporters and to the reporter that he allegedly body slammed. >> last night i made a mistake and i took an action that i cannot take back. i'm not proud of what happened. i should not have responded in the way i did. for that, i'm sorry. i should not have treated that reporter that way. and for that, i'm sorry, mr. ben jacobs. >> reporter: gianforte's apology coming after republicans on the hill remain largely silent. >> i'm not sure what happened. >> reporter: showing unwillingness to condone gianforte's behavior.