Moore, often aligned with liberal views, said his comments about lobbying against Democrats should not be taken lightly, The Hill reported.
"We will organize. And we will remove you from office. Make no mistake about it," Moore said during an event in Washington designed to pressure on congressional Democrats -- such as the fiscally conservative Blue Dogs in the House -- and President Obama to back a healthcare reform plan with a public, government-run option.
Moore, whose directorial credits include "Sicko," "Bowling for Columbine," and "Capitalism: A Love Story," said that if he can't find more liberal Democrats to defeat the centrist congressional Democrats in primary elections, he would actively campaign for Republicans in the 2010 general elections.
"You think we're behind you just because you're Democrats?" Moore asked rhetorically. "We'll find Republicans who are smart enough to realize that the majority of Americans want universal healthcare."