Really you don’t need to read more than one chart:
If you vote for anyone other than Harris, you’re voting for Trump:
First of all, in a presidential democracy the president keeps their powers regardless of the composition of Congress (not just the Senate).
It’s true that in order to pass legislation, the President has to cooperate with Congress. But I’m not sure why you think that a more diverse Congress would “force” anyone to compromise. What actually happens is that nothing gets done.
In fact, this is why the purest multiparty democracies, like Italy and Israel, constantly fail. Multiple parties are “forced” to compromise. They can’t or won’t, blaming their opponents. The government is paralyzed and falls. New elections are held. The composition of the legislature changes (or not). Multiple parties are “forced” to compromise. They can’t or won’t, blaming their opponents. The government is paralyzed and falls. New elections are held. Repeat ad infinitum.
I am living in a multi party country. I am experiencing the hurdles and the benefits of it every single day. Coalitions have to be formed to get the majority, smaller parties getting influence because of it.
We are getting stuff like increased minimum wage, social benefits, legalizing cannabis, and more. And not because the senior partner in the coalition wants it. Because of the junior partners. They are required to form a majority, so they can state their terms also.
And yes, some countries with more then two parties in the parliament are failing. What about the US?
Got some universal Healthcare yet? A livable minimum wage for everyone including waiters?
Effective countermeasures to climate change?
No? See, also failing. And that lies in the nature of countries. Sometimes they fail.
You assume that US democracy is failing because it hasn’t delivered progressive goals. But the reason it hasn’t delivered progressive goals is that it’s a democracy, about half the country is not progressive, and there is no national consensus on those goals.
It’s true that in multi-party democracies, it is easier for a progressive minority to make its voice heard and achieve its goals. But it’s also easier for a right-wing minority to make its voice heard and achieve its goals. For example, in both Italy and Israel.
In the US the fucking right wing has 50% in the polls. What are you talking about?
~50% of the people ate voting for a lying, narcissistic Nazi. One of your supreme courts justices took "presents " from someone who has a hitler singed version of “Mein Kampf” in his possession. Right besides ohter Nazi memorabilia.
And your concern is, that it would be easier for a right wing minority to gain power? You have a right wing majority.
We ate shoked over here in Germany that our far right has more then 20% in election results. Your far right has 50% and one of your presidential candidates represents them.