On this point, Canada's Liberals have been caught assigning
certain people to be candidates, and freezing others out.
Some chinese dudes in Vanc. are mad as hell - they were stalled and froze out trying to get their candidates papers in; some white guy who did get selected said "well, I got mine in first,so I should be selected as a candidate". high democratic principals -NOT!.
This is at the start of the process,where the avergage person never sees whats going on.
Everyone is supposed to have a chance to be voted out! A chance to see if anyone would vote for you. \It should be free to try, a stage where people select the candidates maybe,
and runoffs - that would help.