What you mean is "lesser" of two evils. The smaller of two evils. The less large of two evils.
That said, you are 100 percent correct that voting for the lesser of two evils is what got us here. And you would be correct in saying that Obama was in a sense "the lessor of two evils," but I'd sure wonder which two evils you referred to, because as a landlord (or lessor), Obama has a whole lot more than two evils in his property portfolio!!!! ;^)
Actually his father owns it all, he tried to give it to my Father but he turned down the offer.