Lucan Tor is discussing:

CNN has canceled the Democratic presidential town halls scheduled to take place next week ahead of the Iowa caucuses because of the ongoing impeachment trial, a CNN spokesperson said Thursday.

"The cancellation shows how the impeachment trial is upending the 2020 campaign schedule just days before the Iowa caucuses. Klobuchar, Sanders and Warren are absent from the trail as they serve as the jurors in the trial."

Why are the participating? This is a conflict of interest and they are engaged in investigating a rival politician, just what they want Trump impeached for.