Jen Psaki expands MSNBC show to primetime Mondays as network shuffles lineup

Psaki's new show will air Mondays at 8pm ET, replacing Chris Hayes' show that night.
Hayes will continue to host Tuesday-Friday while focusing more on podcast and events.
Psaki's weekend show has been ratings hit, often beating Fox and CNN.
Move comes as MSNBC and other networks shuffle lineups amid strong ratings.
Fox also expanding airtime for top personality Mark Levin on weekends.