Whakaotihia te rerenga e whai ake nei: I Jacksonville, ka noho kaha a Barnes ki nga mahi torangapu a te roopu Democratic. Mai i te tau 1865 tae noa ki te 1885, he mema ia mo te huihuinga a te roopu. He mema a Barnes ki te huihuinga ture o Illinois i te tau 1870 me te tohu i te Kaunihera o Morgan i roto i te Huihuinga Nui o Illinois, i te Whare Kaunihera o Illinois, i te tau 1872. I tohu hoki ia i a Illinois i te 1876,
1880, me te 1884 Democratic National Convention.