Washington (CNN) Two Democrats who may run for president in 2016 will be in Iowa this week, and neither one is named Hillary Clinton.

Former Virginia Sen. Jim Webb and former Maryland Gov. Martin O'Malley will head to the first-in-the-nation caucus state Thursday as part of a multi-day trip for the prospective candidates. The two had committed to headlining a Polk County Democrats Awards Dinner earlier this year, but in the face of an imminent Clinton announcement -- and the fact they are still exploring bids -- both Webb and O'Malley beefed up their schedules in Iowa.

Webb will spend four days in the state, headlining a total of six events that range from a small meet and greet at a local library to a speech to a local Vietnamese group in Des Moines.

Craig Crawford, Webb's spokesman, said the trip was "All part of Jim's seriousness of purpose about exploring a presidential bid."

Webb's trip to Iowa starts Thursday in the state's more conservative west with a meet and greet at the Council Bluffs Library.

Read More