Or.... ahem...  the "dark money"of  Harpers close pal and mentor  Sheldon Adelson.

By they way there were millions spent on Harpers run for leadership where the donors have never been identified and whose names have been removed from the Conservative website.

The Harper Conservatives - and that is what they still are as,Harper is the director of the Conservative fund and seems to have a stranglehold on the party- prefer to keep things dark and in the back rooms..