chris palone has the story. >> reporter: democratic lawmakers' efforts to impeach president trump is gaining momentum. 190 members have signed on as co-sponsors. the move is necessary after this speech. >> we're going to walk down to the capitol. >> reporter: and the deadly riot in the capitol that followed. >> we have a responsibility to hold him accountable. >> reporter: a white house spokesman dismissed impeachment as a politically motivated move which would further divide the country. it comes amidst new revelations first reported by "the washington post" that mr. trump called georgia's lead election investigator last month and urged him to, quote, find the fraud as the president sought to overturn the election results. the white house has not commented. meanwhile the president's allies are decrying twitter's decision to ban him from the social media platform, depriving him of his favorite method of communicating with supporters. >> it's a sad day when big tech has more power than big government, that they can censor the president of the united states. >> reporter: twitter cited