Rand Paul won't appeal to independents, not the kind that decides elections in this country. He comes off asna negative government guy, amd they aren't interested in that kind of ideology, amd never have been. There is a world of difference between federal overreach and thinking government is an inherent negative. Paul preaches the latter, and gets awfully close to "black helicopters" paranoia when he does.
Also, he is uneven amd erratic on foreign policy. Voters like someone who looks calm, savvy, and in charge. Paul comes off as twitchy and uninformed, and in trying to not show his cards, he hedges and qualifies his statements very poorly.
As a test run, imagine a conservative president is presiding and he needs to find someone to run the Department of State. Would he pick Paul? That hypothetical is laughable. Of course not.
And, try as he might, he can't run from his moonbat father and his goofy beliefs