In the Netherlands a party called "DENK" (think, in Dutch) was created, by 2 Turkish muslims, and immediately half the leftist voters (PvdA, party of labour) switched sides. They are more rightist, but especially they are extremely socially conservative. They want extreme punishments for crime and harsh application of the law, except on immigration. Along with the obvious issues (like essentially abolishing animal rights and standards of treatment, allowing islamic schooling, including extremist islamic schooling, pro-minority, except for that one minority with "confusion" between Judaism and Israel, ...)
Anyone who thinks about it for 10 seconds will realize that a long-term alliance between progressives and muslims is impossible. They are forced into that as long as they are very weak, but there's a point where that stops.
It'll be very funny when what has happened in Eastern Europe before happens first in Western Europe, and then in the US. Extreme "friction" will develop between leftist parties and any concentration of muslim voters. This has already happened in a few locations but you've seen nothing yet.