For the last time I promise...
It would be a lie if it said the polls were open on Wednesday.
It would be a lie if it said the urging was coming from the government or from Obama's camp.
They are being urged (by sneaky repubs) so that part is true. Urging someone to do the impossible is not a lie.
Just because something is tricky, does not make it illegal. I do not think this text breaks the law as written. I admit, it would have been easier to see as legal if it had been worded as "...Obama supporters are urged to wait until Wednesday."