WI: Lincoln kept Hamlin as his running mate in 1864

[True Federalist (진정한 연방 주의자)]

By 1865, Hamlin was a Radical Republican, so domestically he would've been similar to Seward, but Seward wasn't in the line of succession. Next would've been President pro tem Lafayette Foster who would've served as Acting President until the election of 1865. One interesting side effect would've been the decoupling of Presidential and Congressional elections.