Digital rights crusader Larry Lessig said Tuesday that he’s considering a bid to take over the late Rep. Tom Lantos’ (D-Calif.) congressional seat. He has given himself a March 1 deadline to make the decision. In a video released on the web late Tuesday, the Stanford law professor formally launched what he calls the “Change Congress Movement,” and he put out feelers to check support for his candidacy. The professor’s goal is to tackle a problem that has dogged politics since perhaps the beginning of time: the corrupting influence of money. In the video, Lessig called on members of Congress to form a bipartisan coalition whose participants would take three pledges he says would change the system: Take no money from political action committees, ban earmarks and agree to public financing of campaigns.