Although controversial Scotus Nominee Brett Kavanaugh will probably be confirmed by the full Senate after a short FBI investigation this week, the lasting damage to the Republican party in the midterm elections can be demonstrated by today's Yougov poll. An article in the Huffington Post today summarizes why:
"But the results suggest that so far, Kavanaugh’s opponents may be especially mobilized by the issue. Sixty-five percent of voters who don’t want him confirmed, the survey finds, say the Supreme Court will be very important to deciding their vote in this year’s midterms, compared to 50 percent of those who support his confirmation ― a gap that’s especially notable because, in the past, Republicans have often been substantially likelier than Democrats to prioritize Supreme Court appointments."
In the past, Republicans and more conservative independents have used SCOTUS confirmations as a primary reason for voting in midterms. Democrat and progressive turnout, especially among younger voters, has lagged behind their counterparts. If the Kavanaugh fallout motivates younger, progressive, and especially cross==party female voters to vote for the Democratic Party nominee the results will be especially damaging for Republicans.
Note - At the time I write this article, the Predictit Betting Market assigns a 59% chance that Kavanaugh will be confirmed by at least 50 Senate votes. (Note - V.P. Mike Pence would cast the tie breaking vote if the Senate vote is 50 / 50 ).