In Congress, Madison persuaded the three
congressmen representing districts on the upper Potomac River (Alexander White and Richard
Bland Lee of Virginia and Daniel Carroll of Maryland) to switch their votes on assumption.
In addition, George Gale, a resident of Maryland's eastern shore and a long time supporter
of the Potomac, agreed to change his vote. In the Senate, Charles Carroll, whose twelve
thousand acre estate bordered on the Potomac near Frederick, Maryland, also changed sides
at Madison's request.