A better presidential primary for 2024

No election in the United States is as important as our elections for president. Yet if the last two cycles have told us anything, it’s that how we nominate presidents is broken and deeply unrepresentative – a process as much about dumb luck as it is about candidate quality or ability to unify voters. But we may be about to see a change.

The Democratic Party would be a trailblazer if it follows through on its new plan to have states apply to be among the early primary states, with selection based...