No, you shouldn't. Potatoes require proper cooking to swell the starch granules. The flavor and texture of eating an undercooked potato are unappealing. Also, they contain resistant starch which is indigestible by the body.
Is it OK to eat undercooked potatoes?
You shouldn't eat undercooked potatoes. When too raw, potatoes contain an alkaloidal compound often found to be uncomfortable or even outright harmful to the human digestive system.
What happens if you eat slightly raw potato?
Though attempting to digest raw starches isn't going to cause you any lasting bodily harm, the raw potato will pass through the digestive tract with very little breakdown, likely leading to an increase in unpleasant cramping, bloating, and gas production.