Populate new polls as they are posted

It would be a nice feature to automatically show new polls when they are posted. For organized events such as spring evals where many votes may be posted over a short time with quick expected turnarounds, seeing polls as they are posted would be a nice quality of life improvement. The current workaround is to continuously refresh the page when a vote is about to be posted.

该 issue 没有指出任何文件、测试或入口点。首先定位轮询的获取和渲染方式，然后确定页面如何在无需手动刷新的情况下接收新发布的轮询；完成的标准是页面打开时新轮询会自动出现，并且有覆盖更新行为的测试。

由索引模型根据 Issue 内容生成。