I’m on a conference call with the Obama campaign right now. It was convened to announced a “key Washington State endorsement,” and the endorsement comes from… The Service Employees International Union—the largest union in Washington State, with over 100,000 members—whose leaders are heaping praise on Obama as I type.

Rep. Adam Smith, the Obama chair in Washington State, is also on the call. After it ends, I’ll let you know what Smith says about Obama’s strategy going into Saturday’s caucuses.

UPDATE: Ok, the call is over. I honestly found the praise and promises from the SEIU people (“he’s awakening a sleeping giant,” “between now and Saturday morning, we are not going to rest”) less interesting than the strategy talk from Rep. Smith.

Smith predicted an Obama win in Washington on Saturday but said it would take work. “We have the ability to win,” he said. “We just need to do the work in the next three days to make that happen… It should be a fun 72 hours.”

On last night’s results: “All of us in the state and throughout the country are very excited about the results from Super Tuesday. We actually ended up with more delegates, and I believe more votes, and more states… It’s just incredible that in a 22-state, nation-wide primary Senator Obama was able to come out on top.”

In other words, Smith is pushing Obama’s new theme that he’s the underdog candidate on the verge of vanquishing the mighty Clinton machine, but with a lot more work still to do. So Smith was pushing that message, but more overtly, he said that in Washington the Obama camp would be pushing Obama’s standard message of change and “being right on Iraq”—a big issue for anti-war voters anywhere, but one that should be particularly resonant in Seattle.

“He’s right on the issues, and he’s unifying people,” Smith said. “We’re excited about the message we have, we’ve got enthusiastic support in every corner of the state… We are very confident in getting our people out and having a very strong showing on Saturday for Senator Obama in the caucuses.”

A reporter on the call asked whether Obama might come back for the (meaningless) Democratic primary on Feb. 19.

“It is all about delegates,” Smith said. In other words, no.