In this Tuesday, May 14, 2019 photo, the historic town hall shines in the evening sun in Bremen, Germany. The city became a battleground for EU's fragile political center, support for Germany's Social Democrats has ebbed dramatically in recent years, but nowhere is their fate more closely watched than in the tiny city-state of Bremen. (AP Photo/Martin Meissner)

BERLIN (AP) — The Social Democrats, Germany's main center-left party, appears headed for its worst-ever result in a state election in Bremen, which it has run for 73 years, as well as a dire showing in the European Parliament election.

Exit polls for ARD and ZDF television put support for the Social Democrats at 24.5% and the center-right Christian Democratic Union, Chancellor Angela Merkel's party, up to 26.5%. The Social Democrats could finish second in the northwestern city-state, Germany's smallest, for the first time.

The polls put support for the Greens in Bremen up to 18.5%. That party is currently the Social Democrats' junior coalition partner in Bremen, and could decide whether or not it keeps its hold on the state government.

The exit polls put the far-right Alternative for Germany up at 7% support.

Social Democrats looking disappointed after the first results of the federal state elections in Bremen, Germany, Sunday, May 26, 2019. (Christophe Gateau/dpa via AP)
In this Tuesday, May 14, 2019 photo a bronze statue depicting the Bremen Town Musicians located in Bremen, Germany. The city became a battleground for EU's fragile political center, support for Germany's Social Democrats has ebbed dramatically in recent years, but nowhere is their fate more closely watched than in the tiny city-state of Bremen. (AP Photo/Martin Meissner)
In this Thursday, May 16, 2019 photo, containers are stored in the free harbor in Bremerhaven, Germany. The city became a battleground for EU's fragile political center, support for Germany's Social Democrats has ebbed dramatically in recent years, but nowhere is their fate more closely watched than in the tiny city-state of Bremen. (AP Photo/Martin Meissner)
Thursday, May 16, 2019 photo, cars for import and export park in the free harbour in Bremerhaven, Germany. The city became a battleground for EU's fragile political center, support for Germany's Social Democrats has ebbed dramatically in recent years, but nowhere is their fate more closely watched than in the tiny city-state of Bremen. (AP Photo/Martin Meissner)
In this Thursday, May 16, 2019 photo, a man stands in fron of posters for the European and state elections of Social Democrats, SPD, and Alternative for Germany, AfD, in Bremerhaven, Germany. The city became a battleground for EU's fragile political center, support for Germany's Social Democrats has ebbed dramatically in recent years, but nowhere is their fate more closely watched than in the tiny city-state of Bremen. (AP Photo/Martin Meissner)