Are you proposing that we do this for all groups every round??
While I agree that it would be a good way to deal with accidental multi-kickoffs (like what's looking like will happen in group 5), doing it for all normal poll outcomes would be a little much. And frankly, as Tobo said, in a legitimate kickoff, an extra chance would really just be delaying the kicking for another two rounds.
I propose an alternate option (that definitely won't be abused
)--I could set the poll votes to being changeable during the 48 hour window. That way, if a fave looks like she's on the chopping block, you could make a push for her to stay, and possibly sway minds to change their votes in real time! I know I mostly vote on a whim--if I was then confronted by video of your oshi being amazing, I could definitely be swayed!