I find this point the most salient as to why I too am not 'overly concerned'. The only thing that the election demonstrated is that partisan democrats came out in larger numbers, fielded better candidates (easy now--give me a moment) and convinced a few Greens, Independents and Republicans to "Vote for us...We're not them" .
But, the vast majority of America is not loony Left. We are still a right of center country...and Americans will not tolerate a sudden lurch to the Left.
Also, rumors are floating that GWB was rummaging through a desk in the oval office this morning and found a veto pen! Surprise, surprise.
Moreover, divided government may just give us blessed government gridlock...See, there is always a silver lining.