In prime time, Fox News averaged 2 million viewers, far ahead of CNN with 920,000 and MSNBC with 686,000.
But CNN was up a whopping 80 percent in prime-time viewers while Fox News grew 9 percent and MSNBC fell 10 percent.
Fox News had the 13 most-watched programs in cable news, with "The O'Reilly Factor" setting the pace with 3.1 million viewers.
In all of cable, Fox News was the No. 2 channel for the month while CNN was No. 17 and MSNBC was No. 27.
News advertisers are most interested in the 25-to-54 age group. Fox News remained the leader in that count, but CNN scored the biggest gain again.
Fox News averaged 389,000 viewers to CNN's 340,000 and MSNBC's 237,000. CNN was up 128 percent from the previous year while Fox News was down 2 percent and MSNBC was flat.
HLN enjoyed a huge ratings boost from its Jodi Arias coverage. In prime time, HLN averaged 524,000 viewers, up 40 percent from the previous year.
In the 25-to-54 age group, HLN was up 37 percent, to 177,000 viewers.
The race was tighter in the 25-to-54 age group with NBC drawing 2.2 million to ABC's 1.9 million and CBS' 1.7 million.