The New York Times article confirms much of the substance of the Politco article, but it adds factual details. The New York Times describes a partnership between Obama and Pelosi that developed once he trusted her instincts on reform more than his most senior advisor.
Here is a clip from the article:
In a series of impassioned conversations, over the telephone and in the Oval Office, [Pelosi] conveyed her frustration to the president, according to four people familiar with the talks. If she and Harry Reid, the Senate Democratic leader, were going to stick out their necks for Mr. Obama’s top legislative priority, Ms. Pelosi wanted assurances that the president would too. At the White House, aides to Mr. Obama say, he also wanted assurances; he needed to hear that the leaders could pass his far-reaching plan.Only a month ago, several journalists wrote off comprehensive healthcare reform and asserted that Emanuel was right to advocate less. Today, it appears that the opposite is true.
“We’re in the majority,” Ms. Pelosi told the president. “We’ll never have a better majority in your presidency in numbers than we’ve got right now. We can make this work.”
Now, in what could become a legislative Lazarus tale — or at least the most riveting cliffhanger of the Obama presidency so far— the House is set to take up the health bill for what Democrats hope will be the last time.
For Mr. Obama, who vowed earlier this month to do “everything in my power” to see the bill to fruition, the measure’s passage would be an extraordinary triumph. Its defeat could weaken him for the rest of his days in office.
See also: Pelosi Convinced Obama to Reject Emanuel's "Kiddie Care" Proposal and to Pursue Comprehensive Reform.