This is a complex question, but up front first and foremost in any Capitalist country, voting will always benefit the rich, even FDR style Social Democracy came about as concessions to prevent revolution in the context of a decimated working class and a rising USSR.

People, generally, vote along their class interests, but these are handled in a different manner depending on which country you are in. Using the US as an example, the DNC caters to social progressivism, while the GOP caters to social conservativism. On foreign policy, the GOP and DNC are near identical, and when it comes to domestic economic policy, the DNC caters slightly more to urban voters while the GOP caters to rural voters.

This is all, however, in the context of parties that function as businesses that sell policy to Capitalists. Both parties serve Capital, because Capital is what holds real power. It holds power over the media, the state, everything.

The answer to how to fix this is getting workers to organize. When workers organize, they raise their social and class awareness and can accomplish far more than atomized individuals can.

Fundamental flaw of the democracy: It assumes that people know what’s the best for them

The rich are clever and very well coordinated

https://www.cracked.com/blog/6-reasons-trumps-rise-that-no-one-talks-about

its not about red vs blue states. It’s About The Country Vs. The City

A successful propaganda campaign by the owning class.

And a quote from an anonymous mutual:

many people will unfortunately need to learn this the hard way it seems at the expense of those who take the time to see the writing on the wall those ignorant to their exploitation will seldom listen to those who try to tell them how horribly theyre being fucked “if it were really so bad id notice” theyll say “this isnt so bad” theyll say, standing on the peak of the mountain that is dunning-kruger unknowing all we can do is wait, and watch to find out what what it is that throws them into the valley of unfathomable uncertainty in the meantime we must work for each other, for those who do see how good things could be. maybe then, our greener grass will coax them into giving us a fair listen

This question is actually pretty old. Already ancient Greek / Roman philosophers discussed this.

Google the word ‘anacyclosis’ if you want to learn more. Alternatively here is a video link. I marked the position where the cycle explanation starts. https://www.youtube.com/watch?v=uqsBx58GxYY&t=371

Probably unpopular answer, but it’s not some clear cut “this political party has better policies for everyone”. Republican policies usually are better for people living in rural areas, and Democratic policies are usually better for people in cities. I’m sure people will debate this, but this is the reason why people typically vote depending on where they live. At the very least, they believe that their party has better policies for them and their way of life.

My personal (anecdotal evidence) is that I work for a small business in a rural area, and our main customers are other small business owners (usually self employed or under 5 employees). Over the last 3 presidents, the Obama years were rough for our company, we had explosive growth during the Trump years, and then we’ve had stagnant growth over the past 4 years. Our largest competitor went out of business this past year, which sent us a lot of new customers, but we’ve also had a lot of our customers go out of business as well, so we’ve been pretty stagnant. Being stagnant isn’t terrible, we don’t have shareholders or anything, but the cost of living has increased and company profit/wages haven’t which is a problem. That said I know we’re doing pretty well compared to a lot of people here.

Another (once again anecdotal) example is that I have a friend who paints murals full time, for the past 30ish years. He told me that he does well with either Republicans or Democrats in office, but that his customers change. During republican presidents, his customer base is usually local businesses wanting to decorate their stores. During democratic presidents, his customer base is usually towns, state buildings, schools, etc.

But anyways, I’d be very interested to hear from some people living in cities if there’s a visible uptick in income/etc when we have a democratic president, or in general what your personal observations are on how which president affects your local businesses/income/prices/etc.

Bexause you have a two party system where both sides are corrupt

Because the rich control an overwhelming amount of the media we consume. They are capable of shaping the narrative to their benefit.

Propaganda. Lack of education. There’s a reason they want to defund public schools. They’re not doing it out of the goodness of their hearts. :)

Anger, Self-Loathing, and misguided Hate

Anger is like a fire. They’re a useful yet dangerous tool that burns and breaks stuff. When handled correctly, fire can shine light in the dark, give warmth in the cold, cook meals for the hungry, or protect you from wolves. In other words, a well controlled Anger is good at getting work done.

Not everyone has learned how to manage their Anger properly. Some let their Anger go too dim, making it hard to do stuff. Some redirect their Anger at themselves, out of fear of hurting others or believing they deserve it. Some let their Anger spread without a care of who it hurts, as long as it gets the job done. Some learn to concentrate their Anger into a beam of Hate, but don’t know who or what to aim the beam at.

Going back to the question “why do people vote against their own interests?” It is Self-Loathing. It is people who are so used to having a piece of themselves set on fire by others that they start setting themselves on fire of their own volition. It is misguided Hate. It is people who know there’s a problem and want to fix it, but have been misled about the source of the problems by people who are interested in not getting targeted by Hate.

“Why do they vote to benefit the rich?” We don’t have a choice there when either vote would have benefited the rich and powerful anyway. Just choosing between different types of benefits. Money and Power have a tendency to rise upwards, so any aid we give to those struggling at the bottom will end up benefiting those at the top anyway. But I hear ya, giving benefits to the poor and letting it rise away still beats just giving it to the rich and hoping it’ll trickle down someday.

They get manipulated about and distracted by certain issues. The people who want power know this and exploit topics such as guns, abortion, fear of crime, racism/nationalism, sexism, economic issues and taxes. Plenty of people vote republican because they have been convinced that Democrats will take their guns, allow in too many immigrants (with the implicit idea that immigrants are bad somehow), be worse on the economy, raise taxes, let criminals get off easy, reduce the influence of Christianity, and so forth.

There’s also the decades of propaganda about socialism and communism, and against social safety nets as well as government and anything run by the government vs a private entity. So basically, because they’re not very aware or well informed and all themselves to be convinced by propaganda.

Because everyone thinks of themselves as a potential rich person. Or in other words: people think that being rich is the ideal state, so let’s align everything around that.

If we truly put a yoke on the rich and contained them, we would also be reining in the smallfolks dreams.

By contrast, rich people don’t sit around dreaming about being smallfolk and planning aspirationally for the day that will happen.

Because they’ve successfully been conned into thinking that what’s in the best interests of the rich is in their own best interests too.

Because they’ve been fooled into thinking it will either benefit them, or benefit people they feel “deserve it.”

False consciousness.