First, I am not (by registration, anyway) a Republican. I'm a member of the Libertarian party.
That means, in a generalized way, that I try to base my economic, political and moral thinking on analysis in terms of empirical reason. In other words, if you try to walk on water, you're gonna get wet.
For most of us who follow this belief (of which Milton Friedman and Ayn Rand are probably the best-known advocates) it means that Government should simply stay away from attempts to regulate the economy.
In the purest form, it would also imply no legislated morality .. no restrictions on substance (ab)use or sexual conduct.
But that also implies full responsibility for your actions: I wouldn't care about gay civil unions one way or the other, except that the primary objective seems to be to allow large numbers of gay-loser couples to raid the Social Security system.
And if you ruin your health through unwise conduct, be it sexual profligacy, drug use, smoking, etc. It's not the duty of those who've been more responsible to clean up after you.
So the simple dyanmics of the political scene make it more likely that the Democrats wiil propose laws I view as a threat to my life's work. If the Republican is a proven bigot like Duke, Helms, North, Denton or Dornan, I might consider a Democrat, but it's rare to find a Democrat, and especially a Liberal Democrat, who understands that the problem is usually an attempt by legislators to undercut the natural workings of a market economy.
And that way to level the playing field is not to pass laws, but to repeal them.
Now consider radical (as opposed to mainstream) Islam. --- If you've read Malcolm X, you know that, like a secular Jew, he had little belief in a supreme being or afterlife. ("Hell is when you're dumb!" -- Malcolm X).
But Fundamentalist Muslims, like Fundamentalist Christians and environmentalists, in varing degrees, believe that right is on their side by definition and that their actions are self-justifying.
And that pretty much explains my preference for conservatives over liberals and Republicans over Democrats, unless a Libertarian is available.
And I'll suggest a site --- www.freedomsnest.com