Vota por la opción que más te gusta, o por la menos culei.
Vote for the option you like the most, or for the least bad.
Captions 14-15, Tu Rock es Votar - Comercial de TVPlay Caption
Tu Rock es Votar speaks directly to Mexico's youth in the language they understand. Problem is, Spanish dictionaries don't contain every example of youthful Mexican street slang. Case in point: culei. To understand this word, a native speaker from México is going to be more helpful than your average dictionary. So we asked our friends on the ground to translate, and we learned that culei is a Mexican variation of the slang word culero, which has many, colorful meanings--basically, malo ("bad") or gacho (Mexican for "nasty" or "ugly"). Trolling around the web, we also found culei linked to the brand name Kool-Aid -as in the Technicolored, artificial fruit beverage. Their pronunciations are almost identical--save the final "d." Without sweating the details of the origins of the slang too much, we bring you the translation:
"Vote for the option that you like most, or for the least bad."
Sounds like the U.S.'s last "Rock the Vote" campaign, which acknowledged the youth vote's antipathy or even disgust with available election candidates.