Can Democrats please get serious about challenging John Warner now?

Republican Senator John Warner on George Bush's speech last night announcing his DISASTROUS plan to send more than 20,000 American troops into the midst of a civil war in Iraq:

"I found the speech to be credible, and sincere that reflects a lot of study by the Executive Branch, and a lot of advice the President took into consideration."

I have no doubt that the Democrats will field a candidate to challenge John Warner, but it seems that the mood is rather "ho hum" because Warner isn't "that bad" according to some. However, in a Republican party where party loyalty comes before doing the RIGHT thing, I'd say that that "ho hum" attitude is the WRONG one to have.