In a pseudo-democracy policy priorities are defined exclusively by the oligarchy, and the required opinions are sold to voters through media channels directed by think tanks and PR outfits.
Voters are persuaded they have a choice over personalities and superficial issues, but never over national policy.
If a politician appears to threaten the cosy consensus, the media wurlitzer goes into overdrive to smear them, talk them down, and persuade voters that they're "extremist", "not electable", and other stock tropes.
So - it doesn't matter if leaders are voted out if key policy goals never change. And as a rule they either don't, or they change in ways that benefit the oligarchs, not the majority of the population.
That doesn't mean it works in practice. It may mean your electorate is tuning in to the media noise. The end result is usually that no long-term improvements happen in the country, because the first thing a new government does is undo the reforms and cancel the programs of the previous one.
> For me the key is to be a floating voter. Do not buy into the group-think tribalism of party loyalty, it's a mug's game.
That's table stakes for any human being with more than half a brain (unfortunately, most people aren't like that). But then you hit another problem. Last two elections (one internal and one for EU MEPs), I decided to learn more about the available choices of political parties and their programs. And I came from this with a firm belief that I cannot, in good conscience, support any single one of them. That's the negative side of voting for people, parties and programs. You don't get to express your true beliefs - you can only vote for the lesser evil, or abstain.
It demonstrably does, elected leaders get voted out in well functioning democracies all the time. Do some incumbents hang on longer than seems right? Yes, but who gets to decide how long is right? The voters, whether you or I like it or not. Sometimes the voters screw up, but that's their right and it's their right to correct that if they choose to or not if they don't.
For me the key is to be a floating voter. Do not buy into the group-think tribalism of party loyalty, it's a mug's game. I say that, but I've voted for the same part here in the UK except for twice, but to me those two times are crucial. They were actually painful choices to make, but important decisions. To be honest I have also voted on party lines and regretted it. Those two times should really be three.
I really don't like representative democracy where you're voting for a list. It puts power in the hands of party committees, and makes those actually elected beholden to those who put them on the list. Elected officials should never be exposed to that kind of leverage.