I think of evil as being primarily, although not exclusively, religious in nature.
"The lesser of two evils" has a nifty ring to it, it is rarely accurate.
The current presidential race I see as not really between two evils, but between one candidate whom I intensely dislike whose victory I really fear and the other who is not quite what I wish for who may back some policies that I am quite against, but who might be quite beneficial to the economy.
I do not think the contest is between two evils. I see no benefit to talking as if if it is.