John McCain's performance did seem to put the blue collar workers importance to the forefront. If little else this may show a gradual support in the coming weeks.
Just in case details matter...
Joe Plumber expected to earn $250-280k next year and he wondered how Obama's tax plan affected him. Only the amount over $250k would incur more tax but this could be offset by 50% rebate on health benefits paid to workers, capital gains tax credit for small business...
McCain was not giving anything for Joe Plumber. He spouted innuendo - would blue-collars check his plans?