"They all had a chance to win. None of them won. So I'm for none of the above. I'm for Paul Ryan to be our nominee."
And a Ryan spokesman said: "The speaker is grateful for the support, but he is not interested. He will not accept a nomination and believes our nominee should be someone who ran this year."
That puts it more strongly than what I've seen from Ryan. Yesterday, for example: "I'm not running for president. I made that decision, consciously, not to. I don't see that happening. I'm not thinking about it. I'm happy where I am, so no."
That seems to leave the door ajar. I say "seems" because I don't know the precise question that's getting the "so no."