That sort of exists in Vancouver. Recently the Vision Party won a majority of seats in council and their coice for Mayor won in a landslide victory. Vision had

That sort of exists in Vancouver. Recently the Vision Party won a majority of seats in council and their coice for Mayor won in a landslide victory. Vision had some sort of agreement where COPE (Coalition of Progressive Electors) wouldn't run a candidate for Mayor so that the two progressive parties wouldn't split the vote. COPE has two councillors and they often vote with Vision. The other party, NPA (Non-Partisan Association) (yes that's the real name...Wikipedia for more details) has one seat on council. The end effect of all of this is that Vision has very quickly been able to implement their agenda. Most recently several separated bike lanes and a street food cart program.