Dennis Kucinich and Marcy Kaptur have been friends for many years, but you wouldn't know it from listening to the attack ads the two Ohio Democrats have been airing against one another. While Republican voters in Ohio cast their ballots for a presidential nominee, Ohio Democrats in district nine will be picking between Kucinich and Kaptur in a Congressional primary. The race is the product of redistricting in Ohio — and it's just the first of many of its kind. In the coming months, 11 primary contests in states like Pennsylvania, New Jersey, and California will similarly pit incumbents against each other.
Todd Zwillich is The Takeaway's Washington correspondent.