alternatehistory.com

In 1838 conflicting returns in parts Pennsylvania lead to a partisan battle known as the Buckshot War. Control of the state House of Representatives was in the balance, with the Whigs already controlling the Senate. The end of the "war" meant a humiliating loss for the Whigs, and Stevens being tossed out into the wilderness for some time.

Assuming the Whigs can win the state House, fairly or unfairly, and Stevens is elected to the Senate, what comes of that? How will his career and the eventual anti-slavery party (Republican or otherwise) interact with this early victory.
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