Not a "clear" victory for Democrats, but certainly a broad one. Remember, Republicans still control 30 governors' mansions, a majority of state legislatures and control the U.S. House of Representatives. We still live in a center-right country, but now is certainly a time of reflection for the GOP. They must use this time wisely or else Republicans will find itself on the losing end of future elections. From The Economist:

The Democrats won 50.6% of the votes for president, to 47.8% for the Republicans; 53.6% of the votes for the Senate, to 42.9% for the Republicans; and…49% of the votes for the House, to 48.2% for the Republicans (some ballots are still being counted).