If I (& perhaps a few friends/associates) set up a political party that is underpinned by an explicitly defined set of principles, beliefs & objectives, & if I and members of this party wish to obtain funding from corporations & wealthy individuals- to pay for the party's administrative operations, there are no logical, proper reasons why we should be impeded from doing this

LAWS AGAINST THIS WOULD BE UNCONSTITUTIONAL: IE: WOULD INFRINGE SECTION #2 (FREEDOMS OF EXPRESSION & COMMUNICATION) RIGHTS OF CANADA'S CHARTER OF RIGHTS & FREEDOMS!
http://laws-lois.justice.gc.ca/eng/Const/page-15.html 

BC Laws expressly limit political parties' expenditures during election campaign periods:
http://www.bclaws.ca/Recon/document/ID/freeside/96106_00 - (sections 198 & 199) 

It is immaterial if a political party's election-campaign spending comes from corporations, unions or wealthy individuals

Free market "doers" & pursuers of respectable ideals should not be impeded by self-serving hypocrites!!