Here are a few thoughts from the January 11th edition of Wall Street Journal.
"Mrs. Clinton is ambitious and clever; if there's a way of winning this race, she'll find it. She also won't be bound by any "hopeful" pledges of bipartisanship, but will skillfully exploit whatever ugliness comes out of the current Republican brawl."
"The Obama upside: Mr. Obama is flying high right now, but he owes some of that altitude to what has been a remarkably polite Democratic race (he has yet to face a negative ad), and a charmed press corps. Don't expect Mrs. Clinton to continue placing party unity above her own shot at the White House. Just yesterday, the press teed up some unflattering Obama stories, one about a curious real-estate deal he'd done with a man now facing federal corruption charges; another about highly controversial abortion votes in the Illinois senate. Even if the Clinton campaign wasn't the inspiration for these pieces, you can trust it'll run with them.
The hope among Republicans rooting for Mr. Obama is that there's more to come, only after the nomination and after his party is stuck with him. They're confident they can get traction out of a liberal Illinois and Washington voting record. And he's a rookie who has already committed some foreign-policy flubs; any future ones, under the intense general-election media glare, could prove campaign-wreckers."