In German politics, a grand coalition (German: Große Koalition [ˈɡʁoːsə koaliˈt͡si̯oːn] , shortened to: German: Groko [ˈɡʁoːkoː] ) is a governing coalition between the two parties with the most parliamentarians on federal or state level. The term is generally linked to a coalition between the centre-right CDU/CSU alliance (Union, consisting of the Christian Democratic Union (CDU) and Christian Social Union of Bavaria (CSU) parties) and the centre-left Social Democratic Party (SPD), since they have historically been the major parties in most state and federal elections since 1949. The meaning of the term changed due to the growth of some formerly minor parties in recent years. It is the current governing coalition of Germany under the Merz cabinet following the 2025 federal election, and marks the first time that one of the two parties does not have the most or second most seats in the Bundestag (the AfD won the second most seats). Therefore, the latest coalition between CDU/CSU and SPD is often instead described as a black-red coalition, referring to the respective colors of the two blocs. If the coalition also includes the liberal Free Democratic Party (FDP), it is called a "Germany coalition" (German: Deutschland-Koalition (de)), with the party colors matching the flag of Germany: black for CDU/CSU, red for SPD and yellow for FDP.