Originally Posted by TroubledTigress
The questions I'm seeking advice on is this;
Are common-law polyamory relationships legal now in Canada?
And if so, is it possible to sponsor someone as a conjugal partner into Canada?
Are you asking if it's possible to be in common-law relationships with more than one person at a time? The answer is no. That would fall under the same guidelines as multiple marriages at the same time, which is illegal in Canada.
Regarding spousal immigration laws in Canada in general... http://lmgtfy.com/?q=spousal+immigration+canada&l=1