Overall viewers and 25-to-54 news demographic ratings for @CNN's town hall marathon @KamalaHarris (1.4M, 496K) @BernieSanders (1.3M, 457K) @PeteButtigieg (1.2, 389K) @ewarren (1.2M, 332K) @amyklobuchar (869K, 183K) https://t.co/dQQSY7also