Dhameystir weedha soo socota: Gibson wuxuu siyaasadda ku lug lahaa xubin ka ahaanshaha Xisbiga Whig oo leh aragtiyo adag oo ka soo horjeeda addoonsiga. Intii lagu guda jiray ololihii doorashada madaxtinimada Mareykanka ee 1844, wuxuu khudbado u jeediyay Henry Clay sababo la xiriira barnaamijka Xisbiga Whig ee ka soo horjeeday in Texas lagu aqbalo Midowga maxaa yeelay waxay ahayd gobol addoon ah. Ololihii doorashada madaxtinimada Mareykanka ee 1848, Gibson wuxuu taageeray musharaxii Whig, "Rough and Ready" General Zachary Taylor. Si kastaba ha noqotee, wuxuu ka walaacsan yahay xisbiga Whig ee ka soo horjeeda joojinta addoonsiga wuxuuna si shakhsi ah u booqday Henry Clay gurigiisa oo ku yaal Ashland, Kentucky sanadkii 1848 si uu ugala hadlo arrintan. Wuxuu ku guuldareystay musharaxnimada Whig ee Xeer Ilaaliyaha Guud ee Ohio 1853. Sanadkii 1853, ka dib guuldaradii weyn ee musharaxii Whig General Winfield Scott doorashadii madaxtinimada Mareykanka ee 1852, Gibson wuxuu taageero u fidiyay Xisbiga Free Soil wuxuuna bilaabay inuu abaabulo waxa noqon doona Xisbiga Jamhuuriga ee Ohio. Wuxuu ka qeybgalay shirkii ugu horeeyay ee ururka Jamhuuriga guga 1856 ee Pittsburgh. Wuxuu ka mid ahaa 69-kii ergo ee Ohio (oo ka koobnaa 600 oo ergo oo ka kala yimid waddanka oo dhan) oo ka soo qayb galay shirkii
Shirweynihii ugu horeeyay ee Jamhuuriga oo lagu qabtay Philadelphia bishii June 1856. Sannadkii 1856, wuxuu u tartamay oo loo doortay inuu noqdo Jamhuuriga ugu horreeya ee qabta xafiiska Hantidhawrka Gobolka Ohio.