At a statewide convention of Tennessee Unionists in January 1865, Mullins was nominated for the seat representing Bedford and Rutherford counties in the Tennessee House of Representatives.
æɾə stˈeɪtwaɪd kənvˈɛnʃən ʌv tˌɛnəsˈiː jˈuːniənˌɪsts ɪn dʒˈænjuːˌɛɹi wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti fˈaɪv, mˈʌlᵻnz wʌz nˈɑːmᵻnˌeɪɾᵻd fɚðə sˈiːt ɹˌɛpɹᵻzˈɛntɪŋ bˈɛdfɚd ænd ɹˈʌðɚfɚd kˈaʊntiz ɪnðə tˌɛnəsˈiː hˈaʊs ʌv ɹˌɛpɹᵻzˈɛntətˌɪvz.