In a moment that blended political theater with strategic intent, President Trump and Vice President Vance closed out the Republican Party's inaugural midterm convention on Thursday evening, offering the faithful a unified vision as the party looks toward the coming electoral cycle. The gathering itself was something new — a dedicated midterm convention, a first for the GOP — suggesting that the party is rethinking how it marshals its energy and resources between presidential years. History rarely moves in straight lines, but the choreography of this closing night spoke to a party determined t