Did you hear it last night? A thunderous, whooshing noise coming from somewhere near downtown Miami? That was the sound of Miami's bid to host the 2004 Democratic National Convention being flushed down the proverbial toilet by Alex Penelas. Last night, our Democratic mayor held a fundraiser for Mario Diaz-Balart's Republican congressional campaign. ''Mario's a friend,'' Penelas said Monday before the $250-per-person event at Perricone's Marketplace. ``That goes beyond anything else.'' Penelas, without a hint of sarcasm, said he believes hosting a fundraiser for a Republican will actually strengthen Miami's chances of landing the Democratic convention. Miami is one of...