Decentralised voting apps?

Hi guys, I have just been reading about a recent election result for the AfD in Germany. They had an unexpected result and now are claiming voter fraud, similar to Trump supporters in the US. From my perspective it is becoming common for political parties (across the spectrum) to claim voter fraud in some way. In my opinion this is a dangerous practice, and can easily precipitate civil unrest.

I think an exciting application of blockchain is in decentralised voting. By this method voter fraud would become basically impossible? Every citizen would be provided with a unique voter account upon reaching legal voting age and then could submit their vote incentivised by some sort of token?

Has anyone heard of anything like this being done on the ethereum blockchain?