Almost 76% out of the 78% of SPD members who participated in the poll voted in favour of a coalition with Merkel' Christian Democrats (CDU) and her Bavarian Christian Social Union (CSU) sister party.

Merkel on Tuesday is slated to be voted again for Chancellor, in her third term.

Merkel in a change to her cabinet will create a new ministry for economics and energy that will be headed by SPD leader Sigmar Gabriel.

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