O God why? First DeFazio, now Blumenauer...people are wrong when they think politicians are overly and overtly ambitious! This is the only chance either of them will have at a Senate seat - when they have a chance of beating Smith and serving in the Majority in Washington, D.C. - and both of them turn it down?! Well, role on David Wu or Ben Westlund. Smith needs an effective challenger; he is vulnerable.
DeFazio not running was actually a break for Democrats. This would mean that they have to defend a very marginal open seat and the current NRCC chair seems to be best in winning open Dem seats.