Republican voters--evil, or stupid?

Yesterday I looked at the Republican politicians themselves to see how they operate, and of course, it's not pretty. Today I want to think about why they keep getting elected, even after decades of evidence that doing so has only wrecked the country. What it comes down to, really, is that anyone who has voted R since about 1982 is either evil or stupid. Putting aside, for a moment, those who are in the top 1% of wealth in the country--in other words, the only people in the country who actually benefit in any way whatsoever from Republican "governance"--we have to explain why every other R voter has voted against his or her own material interests.
The first possibility is that the R voters are thinking about things other than material interests when they cast their ballot. What might those things be? Most Republican campaigns since the early 1980s have been run on something called "family values", and supposedly Republicans have them and Democrats don't. (The fact that the vast majority of politicians' violations of those "values" have come from Republicans has completely escaped the notice of the R voter, which is evidence of my second possibility below.) "Family values", it seems, is a coded phrase that really means, to put it baldly and accurately, "bigotry", and imho, bigotry is evil. Why else would Republicans, elected official or not, castigate non-WASPs as being deserving of less than equal treatment under the law? That's what bigots think. Whether you are Latino, African-American, GLBTQI, Muslim, Jewish, Hindu, (and especially, according to polling data) atheist/agnostic, you have been slandered, libeled, and legislated against by Republicans for decades. And now finally, after having exhausted all ethno-religious groups, the less-than-rich are getting their turn in the stocks from the Republicans, as they set about eliminating all methods of preventing poverty and stripping the country of its wealth.
As each group has come under the noose of Republican rule, their only possible political response has been to join the Democrats in fighting off destruction, but until now, at least, Republicans have been able to keep the bigotry just attractive enough to their electorate to keep their winning streak going. But with the overt decimation of the economy that almost everyone sees was caused by Republican policies implemented since 2001, they may have finally reached the end of their run. (When you have dyed-in-the-wool conservatives like Arlen Specter join your party, you know things must have gotten pretty bad across the aisle.) The teabagger nonsense of the last few years, I'm hoping, is their last gasp, but I also think that it represents their coup de grace, because I don't see the Democratic Party as strong enough to stop the economic slaughter any more.
And yet, as we just saw in Wisconsin, some people still vote Republican, despite 100% of the evidence showing that the economy is dying and that Republican policies are 100% to blame for it. Let's take a hypothetical here: even if I think everyone not white and Christian is Satanic and coming to get me, if I'm unemployed with no hope of getting another job, why would I choose to vote for someone who has overtly stated s/he is not interested in helping me get work or food or healthcare over someone who has? And the only reason I can think of would be sheer idiocy on my behalf. It is just plain stupid to vote for a Republican at this late hour; they have shown zero interest in doing anything your "family values" BS calls for. Even when they controlled every single branch of the government, did they repeal Roe v. Wade? No. Did they impose English as the only official language for the country? No. Did they deport every unpapered immigrant? No. Did they declare Christianity the state religion? No. What exactly have they given you, despite decades of your voting for them? Nothing. Zero. Face it, you all were played for chumps. Suckers. It's hard to hear, I know, but get used to it, because I have nothing but contempt for you, now that you've screwed the country over for good, and for what? The null set. (Anyone still voting for Republicans is beyond my contempt, because they are clearly "too stupid to live", as Rebecca Howe once said.)
Congratulations.