We need to eliminate the current voting system of "first past the post", which creates grossly unfair voting and thus unfair elections. Let's stop strategic voting just to avoid splitting the vote, instead let's cast votes on a ranking system so we can truly and freely vote.
The best alternatives for the current system have been proven to be extremely fair and effective both through statistics and real life in major countries like Australia and Ireland.
For President, we should use an "instant run off" voting system also called the alternative vote system to ensure our elections are fair and well represented by the people.
For Congressional Elections for House and Senate, we should use the "single transferable vote" system to accomplish the same thing, but for multiple representation.