I thought is was pretty common knowledge the party platforms changed dramatically in the first half of the 20th century and from an ideological and geographical standpoint, Lincoln's Republican politics (Northern, coastal, strong federal government, the income tax etc) more closely resemble the Democrats of today. All while the Democrats of that era and up until the 1960s were southern based, pro-state government, socially conservative. Hardly a re-write.
Lincoln also f'ing hated the Know Nothing Party, which one could make an educated comparison to the anti-immigration, nativist elements of the Tea Party of today.