Not to put too fine a point on it, but I would argue that your point does still apply. Sanders converted to a Democrat to be available to their platform, but e

Not to put too fine a point on it, but I would argue that your point does still apply. Sanders converted to a Democrat to be available to their platform, but everyone who knows him knows he's not a Democrat. As such, the Democratic party doesn't get any of the fund-raising runoff that a party candidate usually generates. It is that funding that gets used for other purposes, like securing the House, the Senate, etc., etc., and as such, regardless of his current registration, Sanders is a party outsider, and a victory for him is not as big a win for the party as a Hillary, Biden, Kerry or even Jim Webb win would be.