"The Democratic-Republican Party won control of the presidency and congress in 1800, and managed to eliminate the Federalists as serious rivals by the end of the War of 1812. After 1816, the remnants of the party split into factions. War hero General Andrew Jackson of Tennessee, emerged as the leader of the faction that, after he was elected president in 1828, became the Democratic Party."

My view, supported by another wikipedia article, is that after some ten years of virtual one-party rule (1814-1824), the party eventually split.

http://en.wikipedia.org/wiki/History_of_the_United_States(1789–1849)#The.22Era_of_Good_Feelings.22

Of course, this was strictly speaking after 1816, but the wikipedia article makes it sound as it was immediately after.

You asked for nitpicking, right?

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