The concept of "range" influences poker strategy by shifting focus from individual hands to the spectrum of possible hands an opponent could hold. Instead of playing against a single hand, skilled players assess likely ranges based on betting patterns, position, and tendencies. This allows for better decision-making, improved bluffing, and more accurate reads. By balancing one’s own range and exploiting opponents' predictable tendencies, a player gains a strategic edge, making their actions harder to counter.