It's not a "claim", it's a reality.
Sorry, your opinions do not define "reality" for anyone but yourself.
There's a reason why people like Ron and Rand Paul are in the GOP.
There's also a reason why Ron is outside the mainstream of the GOP. As for Rand, I haven't decided if he's really a libertarian, a conservative, or trying to have his cake and eat it too. (I lean towards the last.)
Most mainstream libertarians believe in some minimal government.
And? I already said there is some overlap between conservatives and libertarians. That does not make libertarianism a "variant" of conservatism.
Ron Paul can't get elected for a variety of reasons. A) Because he has absolutely no charisma (a highly underrated trait in a presidential election), B) Because even if 100% of republicans agree with his views, they still have to choose who's electable in the general election which is why they elected Mitt Romney, even though it was quite obvious no mainstream GOP was really excited about him or even really like him as a candidate.
Did you follow the polls during the GOP primaries last year? I did. Ron Paul consistently garnered the lowest approval numbers from Republican voters with respect to his policy positions. And that's because about half of what he stands for is in rather direct opposition to the current Republican platform -- the half that represents where libertarians and conservatives diverge.
If liberals and libertarians have 'some things in common', where is the 'libertarian wing' of the Democratic party?
Around and growing, especially among younger people. In fact, many of Paul's supporters in the primaries were Democrats or liberals.
You're fooling yourself if you don't think libertarianism isn't a big part of the GOP and just another flavor of conservativism.
No, I'm fooling myself in thinking there is any point in discussing libertarianism with you.
If you actually were interested in this subject, you could educate yourself on it; for example, you might start with the
Libertarian Party platform, where you'd quickly find major policy differences between libertarians and Republicans, in areas such as abortion, energy subsidies, social security, foreign policy, use of the military, and a lot more.
But you aren't really interested, you just want to angrily, mindlessly trash libertarians in the same way you do conservatives.