Some web sites are feeding their visualizations using JSON data accessed via XHRs. It's not "official" data, but they usually compile their data from AP's feed,

Some web sites are feeding their visualizations using JSON data accessed via XHRs. It's not "official" data, but they usually compile their data from AP's feed, or via their own research staff accessing state-level election data directly from each state's election board. Using your browser's devtools network panel, you'll probably find something useful there. For example, visit Politico's Election Results 2018 page [1] and check out the XHRs being made there every few seconds. [1]: https://www.politico.com/election-results/2018/ https://www.politico.com/election-results/2018/