[tsimionescu]

Yes. And even for those few that are not, the representatives they voted for are, whether they won or lost, so it's all moot anyway (either the representative is correct, or the representative is playing their opponent's game, so it doesn't really matter who won).

In general, people don't trust elections because they don't trust their representatives to actually represent their interests, or they don't trust the rest of the political system to actually allow any meaningful change. These are very valid and correct criticisms, confirmed by many sociological studies (in the US at least, the opinions of the bottom 50% of the electorate by wealth have almost no influence on their representatives' agendas).

Voter suppression and vote buying/bullying are much more common, but those have little to do with the voting system (though India has an interesting and complex voting system designed to combat a history of systematic retaliation against entire groups of voters, such as de-funding entire regions that had voted the with the losing party).

But actual voter fraud is rare in most democracies. It's extremely common in authoritarian regimes that are mascarading as democracies, but an online system would make those cases especially trivial.