How Jackson's 1854 convention helped form the Republican Party
At Jackson's Under the Oaks convention, anti-slavery delegates organized a statewide Republican ticket — one important step in a party taking shape across several places.
On July 6, 1854, anti-slavery delegates gathered near Second and Franklin streets in Jackson for a state convention. They adopted a platform and nominated candidates for statewide office under the Republican name. The oak grove is gone, but the spot remains a small public park with markers explaining what happened there.
Here is the part that often gets flattened: there was no single afternoon when a fully formed national party suddenly appeared. A local group had met in Ripon, Wisconsin, in March, and similar anti-slavery coalitions were forming elsewhere. The National Park Service describes the party as coalescing from many local groups. Jackson’s July gathering stands out because it organized a statewide platform and ticket.
So Ripon and Jackson both belong in the origin story, but for different reasons. Jackson does not need an absolute birthplace title to have a strong claim: Under the Oaks marks an early convention where the new party began acting like a state party.
Where to see it
Under the Oaks is a small public park with historical markers at Second and Franklin streets in Jackson.
Sources
Last reviewed against the listed sources: July 15, 2026.