There are 25687 votes so far, so that we need 25687 / 100 = 257 votes to increase Jake'sercentile by 1 %.
There is no simple way to do multiple votes here. The only way for me is to open 50 or 40 browser instances at a time and vote for each one. This way, I votes 140 times, but seem to see only about 100 of my votes counted (maybe a delayed reaction).
