I want to believe it but I remember people saying the same thing in the late 2000s about how the GOP would never recover from supporting Bush and the War in Iraq.
They had one or two somewhat bad elections (2006/2008), started their Tea Party bullshyt, and middle America got right back onboard with Republicans and basically gave them control of most of the government in 2010.
Basically what I'm saying is that a large percentage of the American electorate is stupid/racist and will never change regardless of current events.