Is Bordeaux a Merlot blend?

Merlot, although not the only variety in Bordeaux blends, is commonly part of the composition in Bordeaux wines. Another traditional blend is Cabernet Sauvignon, Cabernet Franc, and Petit Verdot. The Merlot gives a certain softness, fruitiness, and roundness to the Bordeaux blends, making the structure more balanced and the wine complex.