Factbox-German "traffic light" coalition seen as most likely

FILE PHOTO: A combination of four images shows placards of Germany’s top candidates for the September 26 German general elections being placed on large boards. The top row shows Armin Laschet of the Christian Democratic Union Party CDU and Olaf Scholz of Germany’s Social Democratic Party SPD. The bottom row shows Greens Party candidate Annalena Baerbock and Christian Lindner of the Free Democratic Party FDP, in Bonn, Germany, September 20, 2021. REUTERS/Wolfgang Rattay/File Photo

(Reuters) - Germany faces months of tough negotiations to form a coalition government after the federal election on Sunday, with three parties needing to team up to clear the threshold of 50% of all seats in the Bundestag after the vote.

Here is a summary of the most likely coalitions and some of the compromises that will be necessary to reach agreement.