Click on the side you want to choose. When it asks you if you're sure you want to vote for that side or not, the only answers are yes or no. If you choose a different answer rather than yes or no, the program will do nothing. If you want to, explain why you voted for that particular side in this project.
Even though I knew that vector will get more votes, I still did this compared them to know your answers. Sorry, but I kind of cheated on the bitmap side because I duplicated a mirror image of the vector side and made it bitmap. D: