The presumptive GOP nominee sits down with "World News" anchor Charlie Gibson for interview Thursday night.
"I'm surprised, frankly, to see the polls as close as they are, given our brand problems in the Republican Party. I'm pleased where we are."
Says it was "pretty apparent there for a while that it was going to be Senator Obama."
Criticizes Obama on experience, Iraq and other issues. Says his own greatest obstacle will be attracting independents and Reagan Democrats.
Watch video above.
