Howard Dean, former DNC chairman
Al Gore, former vice president
Michelle Obama, current first lady
Jimmy Carter, former president
Jesse Jackson Jr., Congressman from Illinois
Focusing more on the New Hampshire primaries than on the Iowa caucuses.
Eschewing public campaign funds.
Declining an invitation to the first nationally televised debate of the season in Nevada, which all other candidates attended.
Refusing to shake hands with voters at rallies, lest Obama get sick.
Vowing to curtail farm subsidies while campaigning in agriculture-dependent Iowa.
A health insurance mandate for all Americans.
Legalization of civil unions for gay couples.
Temporary suspension of the federal gasoline tax.
Extension of Bush-era tax cuts for upper income brackets.
House resolution to honor the legacy of baseball great Yogi Berra.
None of the above
All of the above
Evan Bayh, senator from Indiana
Hillary Clinton, senator from New York
Bill Richardson, former governor of New Mexico
Tim Kaine, former governor of Virginia
Joe Biden, former senator from Delaware
He felt tensions were still too high after the drawn out primary battle.
He felt there were too many key policy differences between the two, such as on health care reform.
He questioned Clinton's willingness to stick to a consistent campaign message.
Clinton, now secretary of state, had indicated privately that she would be more interested in a cabinet position.
Obama was concerned about the role Bill Clinton might play in the race.
Argue that she is too inexperienced to be so close to the presidency.
Paint her as a hard-line conservative whose views are too extreme for the country at this moment.
Claim that Palin is essentially another helping of George W. Bush.
Draw attention to her pregnant daughter.
Wait it out.
They felt it was not appropriate to comment on directly.
They believed Clinton would help tamp down the controversy to prove her commitment to a civil campaign.
They underestimated how quickly such material could spread over the internet.
They had not done very much research on the matter.
Obama had forgotten about the pastor's more fiery sermons.
Not agreeing to a request by John McCain to cancel the first presidential debate.
Creating a wide playing field rather than focusing on a handful of battleground states.
Holding the Democratic convention in Colorado, which had recently become a swing state.
Focusing on economic issues more than foreign affairs.
Bringing younger voters into the process in record numbers.
Here's an interesting quiz for you.