The Portuguese participating broadcaster, Rádio e Televisão de Portugal (RTP), organised the national final Festival da Canção 2006 in order to select its entry for the contest.

Performing during the show in position 19, "Coisas de nada" was not announced among the top 10 entries of the semi-final and therefore did not qualify to compete in the final.

[1] Their highest placing in the contest was sixth, achieved in 1996 with the song "O meu coração não tem cor" performed by Lúcia Moniz.

[4] Five producers were invited by RTP for the competition: Elvis Veiguinha, José Marinho, Luís Oliveira, Ramón Galarza and Renato Júnior.

Ten entries competed and the winner, "Coisas de nada" performed by Nonstop, was selected based on the 50/50 combination of votes of a jury panel and a public televote.

The jury that voted consisted of Filipe La Féria, Simone de Oliveira, Tozé Brito, Fátima Lopes and João Gobern.

[8] Several online petitions were launched in favour of de Oliveira as the Portuguese entrant, while composer Carlos Coincas criticised RTP's failed efforts to revive the competition solely due to the controversial voting system and the broadcaster's selection of the jury members.