that Obama needs a spine or that "caved again" or got outsmarted. IMO, Obama has been doing pretty much what he wants to do. Probably the astounding victories of the Republicans in 2010 did interfere with domestic policy, but he doubled down on Patriot Act style anti-terrorism after that, including drone killings.
As far as social safety nets, AFAIK, Obama was the first elected Democrat to refer to them as "entitlements." And he promised to "reform" them in January 2009, shortly before his first Inauguration.
http://www.washingtonpost.com/wp-dyn/content/article/2009/01/15/AR2009011504114.htmlThe Democratic Party had always had its conservative wing, chiefly Southern Democrats, who were about as frustrated with the Northeastern Democrats as were conservative Republicans. They becamse stronger in the Party after the almost unanimous electoral defeat of McGovern by Nixon and even stronger after Reagan's defeat of Mondale.
The DLC became their home, especially WASP Southern Democrats with Presidential aspirations. Bill Clinton, Al Gore, Joe Lieberman, Mark Warner, Sam Nunn, Chuck Robb, etc..
Supposedly, Al From, from the very red state or Indiana, was the founder of the DLC. He and Will Marshall, a Southerner, were certainly the first two full time employees of the DLC. (In 2003, Marshall signed the PNAC memo.)
When Clinton won the Presidency as the first DLC candidate, the DLC's hold on the Party became very strong, again especially among those with Presidential aspirations. Even Kerry, who had come to national attention as an anti-Vietnam war hero, became a founding member of the Senate New Democrat Coalition--and then ran for President.
But, Third Way and DLC are not the only ones. There is the Progressive Policy Institute, founded by Will Marshall. (Every time I hear someone wonder why Obama is not as progressive as they are, I wince. People seem to think "progressive" and "liberal" are synonyms. Far from it.) And most recently, there is No Labels, founded by a Republican and joined by many DLC types.
No Labels describes both the Tea Party and liberals as "toxic," as though liberals, which were the base of the Democratic Party for decades, are the equivalent of the Koch-created Teabaggers.
At some point after Lincoln, the Republican and Democratic parties re-aligned, with Democrats becoming the party of equal rights, though, again, Northeastern Republicans were probably more liberal on that issue than were Southern Democrats.
Maybe the Parties will eventually re-align again, this time dividing into liberals and conservatives. It may be too late, though, as the conservatives own almost all media and have been controlling and manipulating public opinion for a long time. For instance, the public option initially polled at over 70% public approval. Then, the propaganda machine got going on it and the next thing we knew Obamacare's death panels would kill your grannie--right after taking your guns so you couldn't even defend her.
Liberal voters may just have slept too long. (Funny thing: by the standards of 1950, 1960 and 1970 standards, I'd be a conservative Democrat, especially for a Northeasterner.)