That's the number of segments CNN has run in the last ten days on allegations that ACORN is responsible for voter registration fraud in multiple states.  According to Media Matters, which tallied the segments, only one of these 54 reports mentioned both of these salient points:

1) that the statutes of most of those states require third parties registering prospective voters to submit all registration forms they receive; and 2) that actual instances of illegal votes being cast as a result of registration fraud are extremely rare. 

In the past week, we've flagged two reports from CNN's Drew Griffin on the registrations submitted by ACORN in Northwest Indiana. In addition to omitting the points above, he also failed to inform viewers that ACORN itself flagged 2,100 suspicious registrations among the 5,000 it turned in Lake County -- a fact that undermines the suggestion from conservatives that the group is somehow trying to "perpetrate one of the greatest frauds in voter history."