It could work in places like New Hampshire and Delaware I guess, but in high population areas and especially high geographic space areas..hell no.
I am not saying that 1 district = 1 seat. I am saying you need an administrative system to divide up a country/state and then within those administrative divides, people can vote and elect multiple candidates.
Take Denmark, here we have districts, and each district has a certain amount of seats based on population numbers. When I go to elect someone, I can vote for the party or a person. Considering the amount of candidates and political parties, the "small districts" have 20+ candidates easy. Last election I voted in the ballot was over half a meter long with most parties having 5+ candidates each, and the big ones having 10.
Or take California. If you go by state only, then each candidate or political party would have to run a state wide campaign, mostly centring on heavy population areas. This would make elections expensive and highly prohibitive for most people. Face it a politican could just concentrate around San Francisco and L.A/San Diego/Orange county and easily win. No need to go to other areas really or am I wrong with my population geography?
Now if you divide up California into say 10 districts or whatever you want to call them, based on population or geopgraphy, then suddenly it gets much cheaper and far more local. You can have multiple seats per district, and it can be done in various ways.. like the Israeli, like the Italian, or Danish or first past the goalpost approach. There are many ways of doing it.
But by reducing the area for each elected official, then you make it cheaper and accessible for parties and people to run. I mean how many 10s of millions does an average Senate race cost these days and those races are hardly competitive.
...but people like what they have now. They keep voting to keep it in place.
If, when defending your support for Donald Trump, and your response is,
"But but but... HILLARY!!!", then you lost the argument before you even began.