Naruto, obviously.
This has yet to be released in the manga or in the anime.
at this point in both the manga and anime Madara would win but i think Naruto will surpass him eventually.
Naruto has not killed Madara yet.
Naruto has beaten sasuke in a fight(without the help of The Nine Tails) but Madara and another akatsuki came and saved him.
Not yet no. Not Tobi or Madara.
Naruto and Sasuke's battle is no longer about prowess, because they both have equally formidable jutsus. Sasuke might have an opportunity to fight naruto once again, but if Sasuke remains 'evil', he will lose. If he is hesitant and straddling between good and evil, then neither will win, but madara will become the ultimate target. Sasuke might not be who Naruto battle's if Madara decides to fuse with him in order to create the ultimate power, but it will be Madara. And it may very well be Sasuke battling Madara psychologically if he tries to fuse with his body and control him. there is no clear cut answer.
Well actually there is no episodes that shows naruto and madara fight each other yet.
tobi is uchiha madara
YES!that is why naruto is training to use the 9tail foxes demonic power to defeat Madara
This happened in Naruto Shippuden Chapter 678, Black Zetsu Betrays Madara.
No. Madara Uchiha is dead but will be revived in the world war by a forbidden jutsu. Tobi (the guy with the orange mask) is not Madara. It is Obito Uchiha. Check out Naruto manga 590-608.
Ah, classic question. Um, some spoilers under here if you do not know much about the manga/anime Naruto... If Minato was alive and Madara had his normal powers, Madara would win, obviously. He is a demon when it came to power~ But Minato is not alive, and Madara does not have his normal powers because the first Hokage damaged him alot... '-' So... yeah... Madara would. -Cami-senpai.