U.S. Senate rules include a special section for consideration of the annual Budget resolution. The Budget is not subject to filibuster, but all amendments must be germane and are voted on consecutively without real debate.
During a vote-a-rama, each amendment is considered and voted on for about 10 minutes until they are finished with all amendments. It’s an exhausting process that many senators have said makes it impossible to know what is actually being considered.
Keith Hennessey: “The vote-a-rama is an unusual cultural institution within the Senate. All 100 Senators are on the floor, in the cloakrooms, or right outside the Senate Chamber for hours and hours upon end. Another 100-ish staff are packed onto tiny staff benches in the rear of the Chamber, one for Republican staff and another for Democratic staff. Everyone is usually exhausted during the vote-a-rama, which comes near the end of an arduous and usually conflict-ridden legislative battle.”