With just under 18 months to go until Election Day 2006, things continue to look up for Senate Democrats. The ingredients -- violence in Iraq, the uneven economy and partisan tension -- are there for the party to make a comeback after two cycles of GOP dominance. Iraq, the number one issue for voters, is devouring the Republican Party. And with no new moment to look for that doesn't have the word "withdrawal" in it, it's hard to see how the situation improves before next November. We've caught Saddam Hussein, we've turned over power, we've held elections and the level...