RT @qikipedia
In 2010, one person in Sweden voted for ";13;Hallands län;80;Halmstad;01;Halmstads västra valkrets;0904;Söndrum 4;pwn DROP TABLE VALJ;1".

Unfortunately for the attempted hacker, the Swedes did sanitize their database inputs.

(Image: xkcd/Randall Munroe.)