A question of the mainstream

The nomination of Brett Kavanaugh to the Supreme Court Monday night should mark a reckoning for the Democratic Party.

With now three consecutive respected choices in the most major of personnel decisions, President Trump has solidified a claim to the mainstream voter, in a time which the Democrats are defined by niche issues.

Trump’s picks of Mike Pence, Neil Gorsuch and now Kavanaugh, for millions of people, backs the reason they voted for him. For millions of others, it makes it that much harder to undo him in 2020.

It all points to the question of what Democrats are willing to lose an elect...