It is incorrect that Libertrians always “take away” Republican votes. Take a look at this poll from the 2006 Congressional race between Hill/Sodrel/Schansberg:
“Libertarian Eric Schansberg gets 5% in today’s poll, which, in a contest this close, will make a difference. Because Schansberg’s support is disproportionately Liberal, he appears to take more votes from the Democrat Hill than the Republican Sodrel.”
I encourage you to click the link so that you may fully educate yourself, and stop spreading myths.