In the US there were 185 reported cases of non-citizens voting in Nevada, selected by Department of Homeland Security from a list of nearly 16,000 potential illegal voters.

Turns out, every single one of those 185 reported cases concerned US citizens ho voted legally.

Also in the US, anti-Catholic bigotry caused people to distrust all Catholics, due to the potential influence of the Catholic Church, run out of the independent city-state of Vatican City, with the Pope in control over the bishops and priests who can tell their members how to vote.

"Prominent Protestant spokesmen, led by Billy Graham and Norman Vincent Peale, organized Protestant ministers [against the presidential candidate John F. Kennedy] by warning them that the pope would be giving orders to a Kennedy White House." "Catholics mobilized and gave Kennedy from 75 to 80 percent of their votes." - https://en.wikipedia.org/wiki/Anti-Catholicism_in_the_United...

So I think you'll understand why I, coming from a US perspective, can easily interpret the reported facts as arising from xenophobia in Sweden, which I understand is another threat against Swedish democracy.