David Plouffe is out with an email to Organizing for America's massive list, calling on Obama supporters to "regroup, refocus, and re-engage on the vital work ahead." The focal point of his missive: to attend State of the Union "watch parties" organized by OFA members around the country. So far, myBO lists 879 such events, though that number is likely to rise as more people sign up to host them. We'll check back on the total on Wednesday; it will be one barometer of the intensity of Obama's grass-roots support. UPDATE: As of noon Eastern on Tuesday, the site lists 1154 events. UPDATE2: As of 9am Eastern on Wednesday, the site lists 1192 events. Plouffe's email reads: On Wednesday evening, President Obama will deliver...