It could also have a major impact on House and Senate races. Both chambers of Congress are narrowly divided at the moment; Republicans hold a slim advantage in the House and Democrats narrowly control the Senate. Either chamber could go either way in November.

I went to Simone Pathe, a senior Washington editor for CNN Politics and the author of an occasional series, “The 10 Senate seats most likely to flip.” Read the most recent version here.

We talked by email about the state of play for the House and Senate and how the shake-up in the presidential race might change things.

See CNN link for details.