There is no telling what will happen tomorrow.
Voeckler - He lost 2:20 to Andy today, but we can't write him off when he can stay with Cadel on the final climb even when Cadel is riding at a pace that is taking time out of Andy. Yes, he went really deep to stay in yellow, but he did that in Pyrenees too, and that didn't cause him to blow up the next day. For whatever reason, he's recovering well. If he finds the right wheel again, and Andy is sufficiently weakened from today's effort, he might be able to keep some of that 15 second lead on Andy and the one minute+ he has on each of Cadel and Frank to hang on to that precious jersey by a yellow thread.
Andy - Given how much time he lost on the final climb today, most of the gain has to be attributed to smart (lucky?) tactics, not necessarily being the strongest. It was great racing, but I just don't think he has another performance like that in him. But tactics could work again, this time using Frank to go ahead and make Cadel pull Andy, until Cadel is sufficiently tired so that Andy can launch a successful attack and take more time out of him.
Frank - He might very well have the most left in the tank to be the strongest for tomorrow. However, to concern Cadel, he has to attack and build significantly on his 4 second lead. But that's also probably the best plan to force Cadel to again do the work tomorrow, only this time pull Andy up the Alpe, leaving Andy with enough fuel to take another minute or more out of Cadel by the finish. But the attack on Cadel could work, leaving Frank ahead, perhaps enough to win the stage, and maybe even pass his brother and Tommy and get the yellow.
Cadel - Pulled everyone today, and made time on Andy while doing it indicating he's the strongest and the best bet, but there's simply no telling how his effort today will affect his performance tomorrow. Plus having to respond to Schleck attacks on both flanks will be extra exhausting. He's in 4th now, the pressure is on just to get back on the podium, much less into yellow.
Contador - Okay, it looks like he's out and if it was just about anyone else he would definitely be, but this is Contador. Maybe he forgot to eat his Wheaties this morning if you know what I mean, and will have a midnight snack tonight to make up for it. I'm also suspicious about the lengthy chat he and Sanchez had at the base of the final climb today, and his sudden decision to back off. Was this tactics to force Cadel to burn out and save for tomorrow? Could that, including the 90 seconds he lost to Cadel at the end, have all been a ruse? I don't expect, but won't be surprised, if he does something special on tomorrow's stage. If he is feeling better, it's not at all inconceivable that he takes out 3:46 on Voeckler, and that will be enough if Tommy also retains his :15 on Andy and minute+ on the others.