Linked to my post below to give you the history behind, why Abe is not running.
https://www.alternatehistory.com/discussion/showthread.php?t=346416
https://www.alternatehistory.com/discussion/showthread.php?t=346416
Thank you for votingVP Hannibal Hamlin seems pretty plausible candidate altough I don't know what changes him really has.
Thank you for voting, Abe eldest son, Robert Todd, is killed at the train station where IOTL Edwin Booth saves him, I added a link to it in the OP.I have voted for Hamlin on the assumption that Lincoln has died in office, since I don't really see how else the situation could arise, unless of course we are changing 1860 as well as 1864, in which case there are so many butterflies that it could be practically anyone..