OS reviewed: iOS
Other OSes: Android (phones and tablets), iPhone, iPad, Symbian
CNN Mobile is a generic news app that is not specific to the election, although of course you can get election news on it.
It is a slick app, and supports swiping and using various gestures to get to the last and previous stories in any section, as well as to navigate around a particular story.
Videos play well, as one would expect. But to get access to the live version of CNN you'll need to register with the name of your cable or satellite provider as well as your username and password for the provider's site (this is true on the main CNN site as well).
Another nice touch: you can swipe the category list at the top of the home page to the right or left, so you can find all the various story topics.
I'm a big CNN fan and was prepared to love the app, but I was disappointed. When it comes to in-depth politics, it doesn't have a whole lot of 'there' there.
It's a perfectly reasonable general news repository, with stories organized according to topic -- top stories, world, U.S., politics, election, justice, entertainment, health and others. Within each of these categories is a list of eight or so stories and a few photos. When you choose a story, you can access the others in the category by swiping. At the end of each story is a list of related stories and, sometimes, videos.
But the photos, strangely, are not optimized for an iPhone 4S. They look more like funhouse photos -- which, depending on your feelings about any or all of the candidates, might not be a problem.
For more elections coverage, and for an experience that translates better to smartphones (to my iPhone, at any rate), you'll want to point your smartphone's browser to the mobile version of CNN's Election Center site. From here, you can access top election-related news stories and opinion pieces, as well as candidates' bios, information about upcoming primaries and a neat calendar view of upcoming political events (just tap on any of the highlighted dates).
And a bonus: If you look at the bottom of the Election Center mobile site, there's a link that says 'Full Site.' Tap on it, and you'll get access to the main CNN site. While it's not specific to mobile, it sure looks better on my iPhone, although I do have to use gestures to make the text bigger. At least the photos seem right.
Overall, I was disappointed with the downloadable CNN app. I was much happier navigating over to the mobile version of CNN's Election Center site, and from there to the CNN main site.