Dead wrong. Elections are about how people feel, and the great number of Hispanics distrust the right.
Nobody is saying there won't be GOP victories: VA, MASS (and the guy backs the Dems on important bills at times), but the NY 23rd (never had a dem before), Rand overthrowing Mitch's candidate in KY, etc. GOP should win in their safe districts.
The point is this: those safe districts are narrowing geographically and more purple districts are emerging. The GOP is going to go smash if it does not engage the 21st century and its issues.