Plenty of successful Iowa politicians have lost their first campaign as a challenger, then defeated the same incumbent two years later. (Tom Harkin and Berkley Bedell are two of the most famous examples.) Rematches occur in a different political context. The challenger has higher name recognition, and the prevailing national atmosphere may favor the party out of power.
In Iowa’s third Congressional district, another kind of rematch is taking shape. U.S. Representative Cindy Axne, who took down an incumbent on her first attempt, will face David Young, who won two U.S. House races before losing to Axne in a difficult year for Republicans nationally.