Guys. Let me explain for you. As the community is growing, more and more players are coming in.
For example, lets say I was a new player and jus recently watched one of AntVenom's Survival Games. Mabye I watched the most recent one, and I now want to play SG4. Since they want to win, they will keep on voting for it. Also a factor that takes place is that not everyone stays on the same server for 2 games in a row. The situation would be different if the servers didn't restart but ya....
In addition, STOP THESE THREADS! If you have eyes and a brain you will be smart enough to read Chad's post about MCSGv2. MCSGv2 will introduce a new voting system which will not allow a map to be played more than 2 times. This will solve this issue.
Please, just have patience!