It's a historic night. Use this as an open thread to react to the Montana and South Dakota results as well as the likelihood that Barack Obama will, any hour now, cross the delegate threshold to claim the 2008 Democratic presidential nomination. And be sure to watch the video - a beautiful summation of how far we've come and a rousing call for the months of hard work ahead.
What was the turning point of this campaign? Iowa seems like a logical choice, when he took first place and Hillary Clinton finished third. But I'd argue that the Potomac Primary on Lincoln's Birthday was the one that really showed Obama's strength, as he claimed 60%+ wins in both a major fall battleground state (Virginia) as well as in reliably Democratic Maryland.
And let it always be remembered that our great state of IDAHO gave the senator his largest margin of any state, more lopsided than any of Clinton's biggest wins in Appalachia.
Update 10:09 p.m.: There's live coverage from tonight's event at New West. Check out the interview with T.J. Thomson and the story about how we all have the coolest T-shirts. (My daughter was sporting the tie-dye one cited!)