I don't know about the Primary, though you can expect a lot of character assassination in the press and attacks on his Climate Change platform as soon as he declares. But clearly the general election will make the Swiftboating of Kerry look like a white lie.

We have met the enemy, and it is us — Pogo

It's too late for him to primary efficiently: (a) he can't manage MSM crisis he doesn't own; and (b) he can't obtain plurality of Democratic delegates, doubtless already beholden in each state to "frontrunners". He is unlikely to run independent party; that's just not his M.O. Thus he would further fragment the national Democractic "caucus" of partisans and appartchiks. To mitigate these risks and enter the market, he will need to burn unsecured cash-in-hand, possibly his own, at a greater rate than any POTUS candidate.

re: General Election
Should he enter after primary caucus, Spring '08, his campaign strategy would be directed to back-channel acquisition of national party apparatus, delegates, and extra-legal fund raisers. Doubtless he could raise record level of ad money from a very small set of fundraisers to manufacture consent within the electorate which is highly fragmented in approvals of unitary theory, messiahianism, 2000 POTUS benefit, and oh global warming. Democratic "frontrunners" are unlikely to concede the popular primary results. xBecause Gore is friendly to "free trade" and finance capital markets, his cost of securitizing his subaltern agenda will require substantial "compromise" of public testimony to assure extant congressional business. MSM is likely to dilute market penetration of Gore paid advertising.

GE Results: another contested electoral college vs. popular vote. SCOTUS, having established principle (precedent, authority) of franchise arbitration, would decide the victor from among the candidates' putative returns.

He's done with politics. He's gone commercial. Kerry shut the window. Put a fork in it. Deal with the assholes you have, not the ones you wish for. Better yet, act every day in your own political, economic interests: Don't play the game.

Diversity is the key to economic and political evolution.