A year ago, the liberal group America Coming Together was on the cutting edge of national politics, spending tens of millions of dollars on a massive voter-mobilization project in every presidential battleground state. The dream was that ACT -- heavily funded by billionaire George Soros -- would play a decisive role in getting Democratic nominee John F. Kerry elected president and then remain in business as a permanent force in liberal politics. Steve Rosenthal, who launched America Coming Together to mobilize voters for Democrat John F. Kerry, said maintaining momentum after the election proved to be harder than expected. Billionaire...