I wondering about race change

i have blood elf paladin 80lvl
and i saw service tab "race change" vote point 20
If i use that race change is it possible changing blood elf to tauren??
well only blood elf can be paladin in horde. but I'm curious that how to be change?
click the blood elf → tauren button
what do you think guys?

no, you will not be able to change to tauren.
this will happen:
you lose 20 Points
you will have the chance to try to change race but you will never be able to successfully do it

I am talking about TBC and Wotlk realms.

On Cata or MoP you can change the race to tauren