Cronin, Doreen.Duck for President. Simon & Schuster Books for Young Readers, 2004.
Here is a duck who began in a humble pond. Who worked his way to farmer. To governor. And now, perhaps, to the highest office in the land. Some say, if he walks like a duck and talks like a duck, he is a duck. We say, if he walks like a duck and talks like a duck, he will be the next president of the United States of America.

Seuss, Dr.The Butter Battle Book. Random House, 1984.
Engaged in a long-running battle, the Yooks and the Zooks develop more and more sophisticated weaponry as they attempt to outdo each other.

Doctorow, Cory.Little Brother. Tor Teen, 2010.
Marcus, a.k.a “w1n5t0n,” is only seventeen years old, but he figures he already knows how the system works—and how to work the system. Smart, fast, and wise to the ways of the networked world, he has no trouble outwitting his high school’s intrusive but clumsy surveillance systems. But his whole world changes when he and his friends find themselves caught in the aftermath of a major terrorist attack on San Francisco.

Levithan, David.Wide Awake. Knopf Books for Young Readers, 2008.
In the not-too-impossible-to-imagine future, a gay Jewish man has been elected president of the United States. Until the governor of one state decides that some election results in his state are invalid, awarding crucial votes to the other candidate, and his fellow party member. Thus is the inspiration for couple Jimmy and Duncan to lend their support to their candidate by deciding to take part in the rallies and protests. Along the way comes an exploration of their relationship, their politics, and their country, and sometimes, as they learn, it’s more about the journey than it is about reaching the destination.