Veteran journalist Elizabeth Drew has an interesting reported op-ed in Politico today. "Notwithstanding the plentiful commentary to the effect that the Pennsylvania primary must have shaken superdelegates planning to support Barack Obama, causing them to rethink their position, key Democrats on Capitol Hill are unbudged. 'I don't think anyone's shaken,' a leading House Democrat told me. The critical mass of Democratic congressmen that has been prepared to endorse Obama when the timing seemed right remains prepared to do so. Their reasons, ones they have held for months, have not changed – and by their very nature are unlikely to."
"Essentially, they are three:
(a) Hillary Rodham Clinton is such a polarizing figure that everyone who ever considered voting Republican in November, and even many who never did, will go to the polls to vote against her, thus jeopardizing Democrats down the ticket – i.e., themselves, or, for party leaders, the sizeable majorities they hope to gain in the House and the Senate in November.
(b) To take the nomination away from Obama when he is leading in the elected delegate count would deeply alienate the black base of the Democratic Party, and, in the words of one leading Democrat, 'The superdelegates are not going to switch their voter and jeopardize the future of the Democratic Party for generations.' Such a move, he said, would also disillusion the new, mostly young, voters who have entered into politics for the first time because of Obama, and lose the votes of independents who could make the critical difference in November.
(c) Because the black vote can make the decisive difference in numerous congressional districts, discarding Obama could cost the Democrats numerous seats."
In his National Journal column, NBC political analyst Charlie Cook writes, "The good news for Hillary Rodham Clinton is that she's winning a lot of battles. The bad news is that the war is pretty much lost. Sure, she won Pennsylvania's April 22 primary by a strong 9 points in the face of being outspent on television ads by Barack Obama 2-to-1. She also won Ohio, Rhode Island, and at least the primary part of the bizarre "Texas two-step" primary-and-caucus combination on March 4.
"But today, she is 133 delegates behind Obama, 1,728 to 1,595, according to NBC News. At this point last week, she trailed by 136 delegates. Since then Clinton has scored a net gain of 10 delegates in Pennsylvania, according to NBC, but has lost a few more superdelegates, so she has made little headway. If this contest were still at the point where momentum, symbolism, and reading tea leaves mattered, Clinton would be in pretty good shape. Everything she has needed to happen is happening now. Obama is getting tougher press coverage and critical examination. He's also getting rattled a bit, and he didn't perform well in the recent debate in Philadelphia. Clinton is winning in big, important places, but it's happening about three months too late."
Per NBC/NJ's Aswini Anburajan, the Obama campaign has reached out to all superdelegates with a memo, arguing that Sen. Barack Obama is the strongest candidate to take on Sen. John McCain, the Republican nominee in the fall. "After 45 contests, Senator Obama has won more delegates, twice as many states and territories, and more of the popular vote. He's won in every part of the country, and has scored victories among every segment of electorate. He's inspired Democrats, Independents, and Republicans, building an unprecedented coalition of more than 1.4 million contributors. And when it comes to head-to-head match-ups versus John McCain, Obama performs better than Clinton in key states and shows the potential to put new states in play for Democrats up and down the ballot," the memo reads.
It goes on to list head to how Clinton and Obama fair in head to head match-ups against McCain, listing polls from traditional battle ground states, big states as well as potential Democratic pick ups in the fall. Some of the polls used, however, are not considered airable by NBC standards. The intent by the Obama campaign, though, is clear -- to try and push back on the spin that recent losses in traditional battleground states leaves him vulnerable in a general election match-up against McCain.
The New York Times says Clinton "met privately on Wednesday and Thursday with uncommitted superdelegates at Democratic Party headquarters in Washington, during a rare evening and morning off the campaign trail. In the meetings, Mrs. Clinton, of New York, talked about her victory in Pennsylvania on Tuesday and her political strength among important voter groups, like women and blue-collar workers, whom the Democrats want to hold onto in the general election, her advisers said. She also talked about her fund-raising success over the last few days, after weeks when she was at a disadvantage to her Democratic opponent, Senator Barack Obama of Illinois."

