Kammala jumla mai zuwa: An kafa Jam'iyyar Republican a 1854, a matsayin martani ga Dokar Kansas-Nebraska. Matsayinta na bautar da bautar ya kasance mai ban sha'awa ga Seward, amma yana buƙatar tsarin Whig a New York don sake zabar shi. A watan Satumbar 1855, jam'iyyun Whig da Republican na New York sun gudanar da tarurruka a lokaci guda wanda ba da daɗewa ba ya haɗu zuwa ɗaya. Seward shi ne mafi shahararren mutum don shiga sabuwar jam'iyyar kuma an yi magana game da shi a matsayin dan takarar shugaban kasa a 1856. Weed, duk da haka, bai ji cewa sabon jam'iyyar ba ta da karfi a matakin kasa don tabbatar da shugabancin, kuma ya shawarci Seward ya jira har zuwa 1860. Lokacin da aka ambaci sunan Seward a
Babban Taron Jam'iyyar Republican na shekara ta 1856 ya sami babbar murna. A zaben shugaban kasa na 1856, dan takarar Democrat, tsohon Sanata na Pennsylvania James Buchanan, ya kayar da dan Republican, tsohon Sanata na California John C. Frémont, da kuma dan takarar Know Nothing, tsohon shugaban Fillmore.