Luís Marques Mendes Luís Filipe Menezes The 2007 Portuguese Social Democratic Party leadership election was held on 28 September 2007.

This was a snap leadership election called by then party leader Luís Marques Mendes, elected in April 2005.

[1] Marques Mendes triggered the snap leadership ballot after the PSD bad result in the July 2007 Lisbon mayoral by-election, in which the PSD candidate, Fernando Negrão, polled 3rd place with just 16% of the votes.

[2] Marques Mendes decided to run for reelection and faced Luís Filipe Menezes in the leadership ballot.

On election day, Menezes defeated Marques Mendes by a 54% to 43% margin and was elected as the new leader of the PSD.