(This from the UK Guardian. Your attention is drawn to the second paragraph, about different groups merging,
and the youth of the victor.)

The big winner of Wednesday’s Netherlands election – and now the largest party of the Dutch left for the first time – was GreenLeft, headed by 30-year-old Jesse Klaver, hailed by his enthusiastic supporters as the “Jessiah”.

According to a generally reliable Ipsos exit poll, the party – formed 25 years ago by a merger of communists, pacifists, evangelicals and self-styled radicals – quadrupled its MPs from four to 16 after a storming campaign by Klaver.

The party celebrated its historic advance with a tweet showing a gif of Kermit the Frog dancing for joy.

Sometimes compared to Canada’s youthful prime minister, Justin Trudeau, Klaver – who has a Moroccan father and a mother of Indonesian descent – said on polling day that the left’s answer to the far right’s rise in Europe was to stand up for its ideals.

“What I would say to all my leftwing friends in Europe: don’t try to fake the populace,” he said.

“Stand for your principles. Be straight. Be pro-refugee. Be pro-European. We’re gaining momentum in the polls. You can stop populism.”

The Netherlands’ youngest ever party leader, Klaver built a strong following on social media through small Meetup events after taking over GreenLeft’s leadership in May 2015.

His TV debates were also widely regarded as triumphs. In one debate watched by 1.6 million viewers, Klaver told his far-right, anti-Islam rival Geert Wilders that it was rightwing populism, not Muslim immigration, that was undermining Dutch culture and traditions.