Yup... things aren't looking too rosy for the Grand Ol' Party heading into the 2020's and beyond. We're becoming quite separated from the years of the GOP champion Ronnie Reagan and now all that millenials are going to remember is the 90's under a Clinton presidency that benefited from a improving economy, the 00's under a pretty subpar Bush administration and the hope movement under Obama. There hasn't been any major gaffs to the level of the economic crisis under Carter or the Vietnam War under LBJ. Meanwhile the Republican Party has been divisive and created extensive gridlock in the legislature.
If the GOP wins in November and a guy like Trump doesn't prove to be another Bush, they might finally get a gasp for air after years of being underwater, but that's not looking like something I'd put money on right now.