You don’t really get much of a choice on who you vote for, you just get to pick which of the two parties occupies your seat. We should eliminate parties entirely and just go back to a vanilla republic where you pick someone from your community to represent you. Repeal the 17th amendment, return the Presidential electors back to being chosen by the legislators, who are voted in only by the will of their local constituents rather than the blessing of the party.
There were 29 major candidates for Democratic party this year. The Democratic primaries were very competitive, and turnout was high (all things considering). Why do you think you'd have different results nationally?