Participate in a blindside on "Survivor," say

VOTE

Think of how players secretly cast their ballots to eliminate someone, often forming alliances beforehand. It’s a single word for this decisive action.

In "Survivor," a blindside happens when players secretly team up to vote someone out unexpectedly. The clue hints at the action you take to make that happen—casting your "vote." The word "blindside" is the cultural reference, tying the idea of a surprise elimination to the show’s strategy. So, the answer is simply what you do to pull off the move: "vote."