According to latest news from livefeed, BB has announced that Imam is leading in votes ...so add this to the list of reasons to why you should vote for Sana instead :D
Imam isn't going to get evicted anyhow (even if he didn't have enough votes) because he is the major "entertainment" quotient in BB ie. the biggest irritant for other housemates. So, BB team would never kick him out, especially when only 4-5 days are left.
THAT is why, you should vote for Sana instead and help her move forward in the race to become the youngest winner of all BB seasons! It will really help her career, even if she reaches the top 3! So, please, if you can then do vote for Sana! =)
PS: I was thinking about asking you to convince us instead if you are indeed going to vote and we can trust you on it ...but, I'll let it slide, so we don't end up wasting precious time ;)