German Chancellor Angela Merkel insists she'll serve out a full fourth term, as pressure mounts from within her own conservative bloc. Some of her allies are angry at compromises in last week's coalition government deal — including handing over the reigns of the powerful finance ministry to the center-left Social Democrats. The Chancellor said the agreement was not ideal — but it was "necessary".

Germany's political leaders might have made a deal — but not all their supporters are up for it. And ultimately, it's the rank and file of the centre left Social Democrats who will have the final say. They're meeting at this Berlin pub to discuss the merits of voting yes or no. And they're divided.

MATTHIAS "I'm between a rock and a hard place. When I think about Europe, I think we should have a Grand Coalition. But when I think about democracy in Germany, then I think Grand Coalition always helps the extremists."

It's the recent surge in SPD membership by those opposed that have politicians on edge.

GESINE "I am very much leaning towards voting against. These talks were the main reason I joined this party. I do not want to go on with a politics that has divided this country in recent years."

In hailing the agreement, the SPD's Martin Schultz insists he got a lot out of it — for a party that scored its worst ever election result last year.

MARTIN SCHULZ LEADER, SOCIAL DEMOCRATS "I think that what we have managed to achieve, and I hope my colleagues can forgive me, does indeed carry the Social Democrat stamp."

Some in the Conservative camp may dispute that — though perhaps they'll wait for the coming SPD vote before raising their voices.

GERO NEUBAUER POLITICAL ANALYST "Now they will start a battle for sovereignty in interpreting the results. They will start, within the party, the SPD — the proponents and the opponents — but also between the parties of the future coalition. And every party will say we are the winner. But if they declare themselves as the winner — you have to declare the other one as loser."

Grand Coalition backers talk of the need for a stable government — but that sounds like an awful lot of wrangling.

GUY HENDERSON BERLIN "Leaders in another Grand Coalition, if it happens, will be pulled in opposing directions — towards each other to keep their coalition government intact, but away from each other by their supporters who come from different sides of the political centre and have become increasingly fed up with constant compromise. That is what this deal is though. Setting up a bumpy ride for German Chancellor Angela Merkel's fourth term. GH, CGTN, BERLIN"