>> reporter: prosecutors expect to finish laying out the government's case early next week. this after a week of damaging revelations, many coming from rick gates, the government's star witness in the trial. march's long time partner pleaded guilty to conspiracy and lying to investigators and is cooperating with the government as it tries to convict his former boss on 18 counts of bank and tax fraud. while the trial is not about the president are or his campaign trump as shadow looms over the proceedings. this is the first of two trials his former campaign chairman faces in virginia and washington, d.c. the virginia case presenting the first big test for special counsel robert mueller. who is investigating russian meddling in the 2016 election machine manafort spent six months on the campaign. >> he won the primary process with a record number of votes. >> before leaving amid question base his lobbying work for pro-russian government. which and payments which prosecutors say totaled more