BOSTON — Mitt Romney ended his Election Day sprint believing that, in the end, he waged the campaign he always wanted.

At this moment of make-or-break anticipation, Romney was serene and contemplative. Jetting to two more battleground states on Tuesday, betting that one last visit might push him over the edge in the razor-sharp contest, he sat thinking. His eyes were closed, his chin resting on his clasped hands and his legs stretched out before him. One aide described it as a prayerful position.