1) Corporate lobbyists, because he was a trial lawyer
2) The Republican Party hates him the most, as is clear by Bill Oh'Really and Michelle Malkin's constant, venomous rants against John Edwards on Fox Noise.
3) The establishment, DLC-type Democrats, as indicated by David Sirota and Bob Novak.
http://davidsirota.com/index.php/2007/05/25/why-i-like-john-edwards/http://www.washingtonpost.com/wp-dyn/content/article/2007/06/06/AR2007060602288.html?referrer=emailarticle4) The establishment media. Turn on the television set. Has any candidate ever been smeared as much over things that "all other candidates" are doing? Historically, most Presidential candidates are rich, live in very expensive houses, spend a lot on hair and make up for media appearances, and make some investments that end up being "questionable." The media don't have anything to smear John Edwards with, so they smear him over ordinary plutocratic stuff.
That's motivation to work "for" John Edwards since all of those groups are working "against" him, but if you need reasons to work for John Edwards, look at the fact that he is running a campaign based on substance and ideas instead of symbolism and image, only. That has won him favor with a lot of people like Paul Krugman, Thom Hartmann, the MoveOn Climate Change crowd.
John Edwards also has the added advantage of being able to stake out "mainstream" positions that are labeled "leftist" by the media, while yet maintaining a sense of moderation and electability. No other Democrat running for President can do that. It's inborn. So, no matter what the media say about John Edwards, the public would always consider him to be a down home fella instead of a "fire-breathing liberal," which is why the media works so hard now to taint his image. I guess they don't feel like they'd have enough time to do it if he got nominated.
John Edwards is, and has always been, the strongest candidate against the GOP field. Even in the Newsweek polls that were touted as indications of Obama and Clinton's strength, John Edwards beat the GOP field by larger margins than Clinton and Obama did. Beating the "field" by larger margins, indicates greater electability against the GOP field.
If you nominate John Edwards against any of the Republicans currently running (except for Huckabee), John Edwards will win by a margin wide enough to potentially ruin GOP "theft" plans. There is only one way that 2008 will be a close election, and that's if Clinton is nominated. Edwards wins in a landslide.
CAMPAIGN ENEMIES
Figuring out who DOESN'T like a candidate is probably the best way to figure out what that candidate is really all about, and candidates who don't have ideological enemies are suspect, to say the least. If you don't have enemies, you aren't doing anything.
Let's stipulate up front that every Democratic candidate has Republican opponents for sheer partisan reasons, and that to judge the candidates based on the specific levels of hate directed at them by Republican partisans is pointless (For instance, Clinton perhaps is more intensely despised by the right, but only because of the virulent, issue-free anti-Clintonism of the 1990s - not for any position on any issue that she holds in contrast to other Democratic candidates).
So who are the candidates' ideological opponents? Clinton used to be hated by the health industry - that is, until she started apologizing for ever pushing universal health care and then became the U.S. Senate's number 2 recipient of health industry cash. Meanwhile, one of Clinton's repetitive talking points is how she's forged close friendships with fringe-right-wing Republicans in the Senate, and she's been a helpful ally to pro-war neoconservatives on an array of Pentagon budget and Iraq War issues. Frankly, other than Republican partisans, Clinton doesn't seem to have many ideological enemies.
Same thing for Obama, and not just because he has a magnetic personality. Though he was a community organizer, Obama's Senate M.O. has been to avoid confrontation at all costs - and in my interview with him, he insinuated that such a posture is a deliberate goal.
Edwards, by contrast, has real ideological enemies - not a surprise considering that before entering politics, his entire career was based on challenging power. Right-wingers can belittle trial lawyers, but at their core, trial lawyers challenge entrenched and often corrupt power for a living - and that has created real adversaries for Edwards.
As Inc. Magazine reported, corporate lobbyists had a rare public temper tantrum when Edwards was put on the Democratic ticket in 2004. While Clinton and Obama fire up the cash vacuum on K Street, Edwards is persona non grata there, thanks to his refusal to take lobbyist or PAC money, his promise to crack down in a serious way on lobbyists if elected, his populist economic stances, and his unwillingness to kiss the corporate ring. "Edwards has little discernible support downtown," the Hill wrote, referring to K Street. "And one source close to the Edwards campaign claimed that it is not working to change that."
http://www.huffingtonpost.com/david-sirota/john-edwards-the-people-_b_45053.html