OMG I just thought about it...Goldwater vs. Reagan in 1980!!!
Suicide...
Remember, Reagan is by no means a true-blue conservative. He is much more of a "populist".
Yes, he was certainly far more moderate than today's republican conservatives ( because the country's political center has turned more and more toward the right since 1980 ). But I totally disagree with his extremist economic policies, that destroyed the already poor american welfare system and the New Deal's legacy.
What I mean is that in the 40-60's, a Reagan vs Johnson race would result in a Johnson 25-points landslide, wereas today it would be the contrary. So, yes, Reagan is a moderate for today's politics, but certainly not for 70's.