Will the G.O.P. Response to Antonin Scalia’s Death Hand the Election to the Democrats?

It is well known, and accepted on both sides, that the Democrats’ hopes of holding on to the White House hinge on getting a high voter turnout on November 8th. If you were a Democratic strategist trying to maximize turnout, what would you most like to see? One possibility, surely, is the prospect of the election being transformed into a referendum on the President versus the do-nothing Republican Congress.