German Social Democratic leaders said the alliance with Merkel is not necessaril

Schulz, the leader of the German Social Democrats (SPD), said on Friday he would not rule out options for forming a new government, but stressed that the move to re-establish "a coalition government" with German Chancellor Merkel's conservative parties was not a snap.

Germany has not been able to form a new government since the September 24 general election. Merkel's Conservative camp and the SPD lost some support during the election, while a political party opposed to immigration entered the parliament, making the issue of the coalition government complicated.

After her unsuccessful plan to form a three-party alliance with two other small parties, Merkel proposed to form alliance with SPD, the governing partner of the past four years.

SPD fears that its alliance with Merkel's center-right camp will once again put pressure on the party's unique characteristics and political opinions. SPD's support for the September election dropped to the lowest level since World War II, when the party had intended to become the opposition party.