A couple humble, minor suggestions!

[Cleaner]

1) What Wolf said.
2) Eh maybe. But sometimes some bad votes turn up, and the person needs to say something to get people's attention so they F2. A lot of pub players have a tendency to just F1 everything. Example...

Indeed, and some people don't even know about voting process and just press f1 when they read "pls all press f1 now" and such.

On the other hand (just to make sure everyone gets it) I'd put: "press f1 to vote YES, f2 to vote NO"