Madrid is gaining some momentum two months before the voting, and this can't be harmful for the bid. Anyway, it doesn't mean that Madrid will win for sure. Just gaining momentum.
What to do from now on till September? IMHO, just keep on playing the Tokyo already-hosted card and the "we are the only European city that are still on the run no matter what you tell us, because me REALLY do want to host... not like others".
It shouldn't be that hard if you were one of the biased voters. Fortunately for Madrid, you're not.