Depends on what kind of redneck.

You have your dirt poor redneck, who drinks whatever is the cheapest thing they can find is they know they can't afford to be picky.

Then you have your just regular poor redneck, who drinks budweiser, miller, coors, natty, busch, heineken or PBR, and because it's one of the few things they have control over, they will absolutely stand up for whatever it is they prefer, also applies to sports teams, hand tools, or anything else with any sort of tribalism involved.

Then you have your middle class, who can really drink about anything, IPAs, sours, w/e they like to act more sophisticated, because it makes them feel superior