A prospective voter who has not yet decided how to vote in a political contest or on an issue.
Webster's New World
Other Word Forms of Undecided
Undecided Sentence Examples
He was considering going to school but undecided about course study.
I'm still undecided which one is my target but I'll soon have my answer and more!
The only point still remaining undecided is whether the valleys of the Bom-kemchik (a tributary of the Yenisei) and its left-hand tributaries do not belong geographically to the Altai region.
Moreover, the word of God in the Koran left many practical points undecided, and therefore it was of the highest importance to know exactly how the Prophet had spoken and acted in various circumstances.