Another earlier poll showed substantial improvement in the number who would consider Trump someone they could vote for. I expect if he continues to gain support, he will be viewed by more and more as someone they could support.
A past poll taken before he announced showed very low support for Trump with less than 40% saying they would vote for him and well over 50% saying they would not. That was lowered to 41% not supporting him and 40% support for him after he announced.
Now it is back up to 60% saying they would not consider voting for him. He may not recover.
For one thing, reports are that evangelicals were not pleased with his comments about communion.
While I am not ready to endorse anyone, and lean towards either Cruz or someone yet undeclared, I think that barring a real blunder--and the McCain dust off is not one--Trump could well be elected as a modern, but slightly more Conservative Teddy Roosevelt--who also shocked the timid types with his flamboyance.