Red with minor sacrifice for safety
If blue wins everybody lives and if it loses blue voters die as usual. If you press red you sacrifice one of your hands to be safe from death.
If you have no hands you lose a foot, if you have neither you can have a freebie. It leaves behind an already healed stump so you won't bleed out or something. You can choose which hand and the process is quick and painless.
Does introducing a small (compared to a life) cost to safety change anything for you?
I guess this is a question mostly for red voters since it changes nothing for blue voters. If blue wants something to think about then maybe an alternate version where red loses (blue percentage)/3 of their body instead so that increasing blue costs red something and technically 100% red or 100% blue are the only scenarios with zero consequences.