'I think it bears repeating that Trump is only popular with registered Republicans.'
Absolutely, but that is for now. His current hurdle is to win the Republican nomination with the active conservative base who actually turn out to vote. But there are lots of good conservative articles saying that Trump is not a conservative, that he was a Democrat. I saw Glen Beck say last night on Megyn's Fox show that he does not support Trump because he is not a real conservative. Trump is beyond conservative/democrat, he straddles both because he is a populist, for the people.
'What he forgot, though, was that it was the Republicans who got them into that mess and Obama who got them out.'
Yes, but Trump is against the Bushes, against the Republican elite. He questioned McCain's war hero status, he questioned whether Bush kept America safe, he was against the Iraq War and he keeps dropping lines about the partners being flown back to Saudi Arabia after 911. Some Republicans accuse him of saying that Hillary would negotiate a good deal with Iran. Trump changes all of the time, no one quite knows where he stands, but the Bushes know it is not with them.
And just hot off the press is the following:
"Putin praises 'bright and talented' Trump
...
Putin offered high praise for the billionaire businessman-turned-Republican presidential front-runner on Thursday during an annual news conference with reporters.
"He is a bright and talented person without any doubt," Putin said, adding that Trump is "an outstanding and talented personality."
And in remarks closely mirroring Trump's assessment of the campaign, the Russian leader called Trump "the absolute leader of the presidential race," according to the Russian TASS news agency.
edition.cnn.com/2015/12/17/politics/russia-putin-trump/
Obviously, they will all go after Trump now, but Trump is too big for them, Jeb is a joke compared to Trump.