Having a proportionally representative system with multiple parties doesn't mean there isn't dominant parties or politics, not at least in Denmark, where the leading coalitions are still always led by the historic two largest parties. Having multiple parties in a legislature doesn't mean no one dominates, this is ridiculous. You might as well say France or Germany do not have major parties. Even the US has "coalition governments" at least in one state I know of (Vermont), this doesn't erase the fact we have major parties.
Also I looked up your PM and his party, here's what Wikipedia says:
Venstre[note 1] (Danish pronunciation: [ˈʋɛnsd̥ʁɐ], literally "left"), full name Venstre, Danmarks Liberale Parti (English: Left, Denmark's Liberal Party), is a conservative-liberal[6][7] and agrarian[8] political party in Denmark. Founded as part of a peasants' movement against the landed aristocracy, today it espouses an economically liberal pro-free market ideology.[9]
Venstre is the major party of the centre-right in Denmark, and the third largest party in the country. The party has produced many Prime Ministers, and most recently governed from 2001 to 2011 as the major partner in a coalition with the Conservative People's Party, with support from the Danish People's Party. In the 2015 parliamentary elections, Venstre received 19.5% of the vote, and 34 out of 179 seats. It is led by Lars Løkke Rasmussen, who took over as party leader and Prime Minister from Anders Fogh Rasmussen when the latter became Secretary General of NATO in 2009.
As for social democracy, it used to mean a large public sector and solidarity and huge redistribution from the employers to employees, but that's being eroded even in Scandinavia with privatization and neoliberalization, that's what I meant. I don't see how we can copy this in the US and expect it to last, esp. since the employers are even stronger in the US than in Denmark.
Right but you don't have a minimum wage then, you have a general agreement on wages, not a law mandating it. And yes only a few cities and to some extent, NY State have enacted such a high minimum wage but what's your point?