colleague alicia menendez in for nicolle wallace begins right now. ♪ hi, everyone. it's 4:00 in new york. i'm alicia menendez in again for nicolle wallace. as we monitor new indications that mitch mcconnell's partisan impeachment blockade might not be as insurmountable as once thought. republican senator lisa murkowski opening up a hairline fracture in mcconnell's firewall to be in total coordination with the white house on impeachment. >> in fairness, when i heard that, i was disturbed. if we are tasked as the full senate to do impartial justice under the constitution and the law, that's the oath that we will swear to uphold at the commencement of this proceeding. then, to me, it means that we have to take that step back from