You could probably argue that for many, they're not that influenced either way. I mean you can look at the US and it's hard to imagine a bigger idiot in charge of the country, yet things have still ticked along largely as they always have. Obviously his actions will have had an impact on some people a great deal, so this only applies in an aggregate sense, but we can be lulled into thinking that political leaders have the power to turn a country into heaven or hell, as that's largely what they want us to think (usually in the sense that the opposition will send us to hell, and we'll send you to heaven). It's largely tinkering at the margins though for most people.
I mean I'm in Czech over Christmas, and average income there is about half what it is here, and yet the country is hardly a backwards hovel. It would take a pretty prolonged period of gross mismanagement to cause enormous damage.