So just like now then. The Liberals are backed by the NDP and maintain power.
Germany has been dominated by two parties since the war under MMP. And proportional representation has done absolutely nothing to inhibit the right wing authoritarians coming into power in much of Eastern Europe, and making gains in Western Europe.
In Israel, Netanyahu's Likud control government with the support of 24% of the electorate in the last election. He had to put together a dog's breakfast of even more extreme parties to do it, but that's always a possibility in that sort of system.