Each believes a victory on Feb. 3 — when Democrats will caucus at more than 1,000 precinct locations — could provide a critical breakthrough. Adding to the volatility is the uncertainty around President Trump’s impeachment trial, which could unfold at any time in January. The likelihood of a Senate impeachment trial in January presents hurdles for Sanders, Warren and the three other senators in the race. They have been brainstorming ways to keep an active presence in Iowa without shirking their duties as jurors in Washington. After saying he would defy a congressional subpoena if called to testify in the Senate trial, Biden recently reversed course, saying he would abide by "any subpoena that was sent to me."

Source: Washington Post December 31, 2019 23:44 UTC