That's pretty much to be expected - especially if someone else is voting against you at the time you're voting, which I suspect may have been the case because I just voted and was able to raise DS' percentage by .19%.
The thing is that during the early stages of voting, a single vote could raise the percentages by quite a lot - but as more and more votes accumulate in the poll, each single vote has less and less of an effect. Whereas during a lot of the voting yesterday one person could have raised the percentages for each film by a full percent or more, that's no longer the case. It took a lot of votes to get TDKR so far ahead of DS yesterday - and it took even more votes to get DS so far ahead of TDKR - so there are A LOT of votes in the poll. What one person might have been able to accomplish with their votes yesterday, it now takes five people to accomplish the same thing. Based on how I was able to increase DS' percentage by .19%, it currently takes more than five people to raise DS' percentage by a full percent. And as more votes accumulate in the poll, it's going to take more than six, seven, eight and so forth to do it. But the good thing in all that is that it's also going to take that same amount of people to decrease DS' percentage by a full percent. And that's why it's so important to keep voting. The more we vote, the harder it is for the opposition to catch up and possibly regain the lead.
And speaking of the lead, when I was cut off from voting, DS was leading 58.45% vs. 41.55%...