nullEach democracy is held hostage to small group of party MEMBERS - those who can muster the numbers to control the primaries.
In Canada, the power brokers are the executive-cum-party-leadership. In the States, it's whatever faction sways the party vote. -- 2013-10-12
Re regional lines:
Canada: west vs. east over natrl resources and equalization; Quebec vs the rest over federalism. Other regional differences are inconsequential, given the distribution of seats.
US: broadly, north vs south. Though gerrymandering throws a wrench into everything. -- 2013-10-12