Listen we see a lot of arguments and frustration here. I just going to point out an alternative voting system which is quite common around the world. US uses the one man one vote system which has an inherit flaw which leads to two parties and a lack of choice for the normal voter. I have used an Irish one here as it is one I know best.
I still hold my view that this type of politics comes from just having only two sides Rep or Dem. If proportional Representation with a Single Vote Transfer (alternative vote) was introduced the hyperbole of energising the base would leave. In countries where it exists there is 'race to the middle', with main political fight between center right and center left.
The fear of being voted out in a caucus by more extreme elements in your party is reduced heavily. Naturally the GOP party would splinter into a Tea Party and the more mainstream center right. The Left would probably do the same with different names.
The Tea Party guys would win seats in certain areas as would the the left party. Add in a few Greens, Texas Party(cause they would have one), workers party, Christian Party.... You also get issue candidates for things like Ban all Muslims, Immigration Reform,.... Some will get seats and some won't...
Whips(leaders) for each party would have more discipline because they have more align principles.
But the main thing will be deals will have to be struck, compromises made to form a working government. Generally a program of government is usually set up with various deals stuck on them. In Europe they publish the program (usually) with aims to achieve in a certain period... So compromises on Gun Laws for Environmental Law are made...
But the main thing is everyone gets more of a say...
There is surprises too... Actually Ireland voted in the first Muslim in Europe in 1992. He was a Doctor in the hospital running on the issue not to reduce services in the hospital. Complete shock he won, to himself included. He got what he wanted too, the main parties wanted the seat back and they knew this was an issue that people wanted. Hey! democracy at work.
Also election season is short, generally 6 - 8 weeks long. A snap election could be 3 weeks, TV & Radio ads are banned with about three 10 min broadcasts from each party. Debates are usually better fun with 5 leaders going at it with various ideas.
But the main thing to do is not alienate anyone, very few get elected on the first count. You are relying on people preference as they go down the list of candidates.
They vote 1 for their favourite, 2 for 2nd... and so on.... Your vote doesn't get lost if your favourite gets knocked out. That's the Single Transfer vote bit.
Then in Ireland we do 3-5 seat constituencies. So there is a quota you must reach to get elected. (It is (Num Votes)/(Number of Seats +1))
The example below is from an Election in my area in 2011. It is a 5 seater so they are electing five people in this area.
View attachment 56537
There is a few things. We count by hand, why? because we do trust machines. Voters count the votes in front of party members (called tally men). These guys can be clairvoyant in knowing who is going to be elected even after the first vote.
Counting usually takes between one to three days, depending how close and if there is recounts. Margins can be razor sharp in win. You can see in the last count there it came down to 17 votes.
If you notice Sean Kyne in was only 54 votes from disqualification in Count 11 but came out of there to win a seat. Mainly because Fidelma in his party who got discounted and got close to 2,000 of her next preference votes.He was actually running against here all day and was behind on the 9th count before getting ahead of her. Then when ahead and she was discounted he gets her transfers.
Honestly, it is exciting with everyone feels their vote makes a difference. Turnout was 70%.
I am not saying this is the best ever but I do feel a certain amount of the problem besetting Washington could be solved by a more representative and more highly competitive elections.