I like Cantwell, and she is rather pro-free trade, too. She's very good for Washington state and very much fits into its politics.
She's also not a Gregoire-like pushover. If Rossi runs against her, she'll out him for the total non-moderate that he is.
Nothing says "Democrats carry eastern Washington counties" like Chris Vance.
There is one single thing that says everything that needs to be said about Vance's electability: this year, Adam Smith won 63-35 against a guy who posted, four months after the election,
a rambling rant that starts with the sentence "Why must Adam steal Pedro's money?" and only goes downhill from there.