Request - Favorite 2 Warhammer 40k Races

[Sarj14]

This is a poll for my Warhammer 40k skirmish series. I am making my first map now and want a poll on what 2 races to add in the Alpha phase.

SM = Space Marines
O = Orks
CM = Chaos Marines
E = Eldar

EDIT:
Alpha Stage Progress on Races
SM - 30%
O - 0%
CM - 0%
E - 0%

In 2 hours, I will work on the top 2 races.