Melodifestivalen is an event organised by Swedish public broadcasters Sveriges Television (SVT) and Sveriges Radio (SR) to determine the country's representative at the Eurovision Song Contest. The voting procedures to select the entrant for the annual contest have varied over the years since the country's debut in . The Swedish broadcasters have experimented with techniques including splitting the juries by age, regional voting, and using an "expert" jury. Televoting was controversially first introduced in 1993, as an unannounced experiment. The Swedish telephone network promptly collapsed under the strain of phone calls being made.