“Talking about the national political outlook, Democratic pollster Mark Mellman said, ‘A very heavy anti-Republican wave is building and it’s going to hit against a very stable political structure. And what is unknown is which will be more important in November — the size of the wave or the stability of the structure.’” Salon‘s Walter Shapiro offers up another Election 2006 preview, with a brief breakdown of the electoral math for the Dems and a focus on the quandary of moderate New England Republicans such as Lincoln Chafee and Chris Shays.