... dont make me laugh! forget your hopes on politicians, no matters who wins they will not make it happen. The reason is obvious: money! The tighter the schedule gets, the more presure from media, the most likely they will be able to bypass the licitation and formalities usually highly burocratic required for the work needed to be done. This opens the big gates of corruption minded fellas who will soak the money available, plus that they can get on top to make a fix (dar um jeitinho!) just the nescessary not to stall the countrys transportation system altogether...
Like tam's first commandment says: nothing replaces the gain!