Here's a suggestion:

Require all Americans to vote.

Now sure, many are too lazy, busy or indifferent, so "What to do?"

Make it a requirement that people list a particular political affiliation, e.g. Republican, Democrat, Libertarian, Socialist; the choice can be made and changed at any time but it must be dealt with every time you renew your license or ID card, i.e. designate at that time.

The reason for this is simple: when an election comes, be it voting by mail, or at a polling place, or even via carrier pigeon, whenever someone does not vote the computer checks to see the party they designated then casts votes on their behalf automatically, following designated preference.

I call it a "default vote."

It will save us some time, especially if we'd vote straight party ticket.