AIPAC-linked money floods a Denver primary as DeGette fights for survival

Rep. Diana DeGette has held her Denver seat since Bill Clinton was president. On Tuesday, she could lose it to Melat Kiros, a democratic socialist backed by the party's insurgent left. Earlier this year, few national observers appeared to be taking the race seriously. Now, millions of dollars flowing in during the closing weeks have raised the stakes.

Heading into Tuesday's primary, outside groups have poured around $3 million into the race over its final weeks, federal campaign finance records show — most of it to help DeGette, an incumbent of nearly three decades, fend off a challenger decades young and backed by the Democratic Socialists of America.