Here is a description:
Mapping Early American Elections will offer a window into the formative era of American politics by producing interactive maps and visualizations of Congressional and state legislative elections from 1787 to 1825. The project makes available the electoral returns and spatial data underlying those maps, along with topical essays on the political history of the period and tutorials to encourage users to use the datasets to create their own maps.
The Roy Rosenzweig Center for History and New Media received funding from the National Endowment for the Humanities in 2016 to offer enhanced access to the early American election returns in the New Nation Votes collection at Tufts University. The New Nation Votes dataset is the only comprehensive record of elections in existence for the early American republic. Scattered in newspapers, state archives, and local repositories around the country, the election returns have been painstakingly gathered over the past forty-five years by Philip J. Lampi of the American Antiquarian Society.