CHRONOLOGY-Turmoil in Poland under the Kaczynski twins

(Reuters) - Poland's ruling Kaczynski twins lost a parliamentary election on Sunday to the centre-right Civic Platform party.

Below is a chronology of political turmoil in the former communist country since the brothers came to power.

2005

Oct 23 - Conservative Warsaw Mayor Lech Kaczynski beats free market champion Donald Tusk in presidential election.

Conservative Law and Justice party wins the parliamentary election and Kazimierz Marcinkiewicz becomes prime minister.

2006

May 5 - Law and Justice forms a coalition government with the ultranationalist League of Polish Families and rural-based leftist Self-Defense parties.

July 14 - Prime Minister Jaroslaw Kaczynski is sworn in by his twin brother to replace Marcinkiewicz, who resigned.

Sept 21 - Kaczynski kicks Self-Defence out of the government, calling its leader Andrzej Lepper a "rabble rouser", but a deal is reached later to save the coalition.

Nov 23 - Poland vetoes key agreement between EU and Russia, demanding an end to Moscow's embargo on its food products.

Dec 1 - Junior coalition party League of Polish Families comes under fire after a newspaper publishes photographs of members of its youth organization giving Nazi salutes.

Dec 4 - Newspaper publishes accusations against senior Self-Defense figures, saying they gave women party workers jobs in exchange for sex.

2007

June 23 - Poland agrees on an EU reform treaty deal after threatening to block it until the last minute.

July 9 - Prime Minister Kaczynski expels Lepper from the cabinet over a corruption investigation, prompting weeks of bitter infighting.

Aug 13 - Prime minister sacks ministers from junior coalition parties, breaking the government apart.

Sept 7 - Parliament votes to end its term two years early, making an election necessary.

Oct 21 - Kaczynskis' Law and Justice party loses parliamentary election to opposition Civic Platform.