After attending my first district convention, I felt invincible.

WHITEHOUSE: The Impact of Change

In 2003, while serving as Kiwanis International chairman for the K-Kids Committee, I asked Kiwanis members who served as district administrators all over the world to come together at the Kiwanis International convention in Indianapolis and bring new shoes.

WHITEHOUSE: One Shoe at a Time

But if at least 15 percent of the voters in a congressional district opt for "uncommitted, " delegates not bound to any candidate could attend the national convention.

CNN: Romney's Michigan win shakes up GOP race