Kasich took many of southwest Ohio's more urbanized counties, while GOP front-runner Donald Trump got more votes east of Cincinnati.
Clinton won in all but a handful of Ohio's counties over Democratic competitor Bernie Sanders.
Here's a breakdown of how Ohio counties voted in Tuesday's primary for Democratic and Republican presidential candidates. Hover over or touch a county to see how it voted.
Here's a look at how Ohio counties voted for the Republican presidential candidates:
Here's a look at how Ohio counties voted for the Democratic presidential candidates:
And here's a look at how each candidate (Republican and Democrat) did by county: