VP Choice
Pres Year
Pres Party
Vecoll / Totecoll
Vreg ~= Preg ==1
Video ~= Pideo ==1
Vrelig ~= Prelig ==1
VP Name
Pres Name
Choice Set Id
Agediff >= 10
VP is woman or nonwhite
VP is rival for nom this year
VP was never rival for nom
Pinvout3==1 | Poutvin3==1