Up until recently, I've been a Barack Obama supporter. Generally, it was because I agree more with him than I agree with John McCain, and I was fool enough to think he would actually stand up for what he believed in, to represent me "closely enough".
After he voted for retroactive telecom immunity, that idealistic bubble burst, as he had previously stated that he would filibuster any bill that included the retroactive immunity provision. The reason this bothered me so much wasn't because I disagreed with his vote, but because he made promises that he would not keep. It calls into question everything else he promises; where else will he meet the neoconservatives midway? Torture? Health care? The war?