The phrase "to vote down" means to reject or disapprove something by casting a negative vote. It is commonly used in reference to proposals, ideas, or decisions that are put forward for discussion and decision-making, such as in a meeting of a board of directors, a town council, or any other group where important matters need to be decided upon.
When someone "votes down" an idea or proposal, it means they do not support it, and therefore, the motion is rejected. This can happen for various reasons - maybe because there are concerns about the feasibility of the plan, or perhaps it goes against the group's values or goals. Whatever the reason may be, a vote down means that the idea or proposal will not move forward as planned.