Moore is full of it - far from being 'ideologically pure' the republicans stopped being the party of Reagan - other than paying lip service - sometime in 1989.
I'd really like to hear Moore define of the 'ideological purity' of Reaganism. As far as I know, Reagan simply exposed simply a return to more basic founding governmental concepts.
Moore just wants to progressivize the party. As far as Trump's blue collar voters in Michigan are concerned, they're fully union indoctrinated marxists. Clinton wasn't aggressive enough in promising to punish those evil corporations and was only marginally less likeable than Trump. The problem for Trump is the fact that he can't keep those promises and will lose those voters.
I haven't paid much attention to PA but Michigan and Wisconsin have been moving rightward over the past decade under very un-Trumplike leadership. Both states have passed sweeping RTW laws and republicans have continued to win here despite the passage of those laws and Trump nowhere in sight. Trump even attacked Scott Walker for lowering taxes in Wisconsin.
Michigan is called a "blue state" based on a tendency to go democrat in presidential elections since Bill Clinton but that really isn't that significant. Michigan has a far longer history of being a GOP state. After all, Ripon Wisconsin and Jackson Michigan were both instrumental in giving birth to the party. (Party officially formed in Ripon and the first party convention in Jackson) Without the 17th amendment democrat senators from Michigan would be a rarity.