Del. Code tit. 15 § 2012
If upon the personal application of anyone to be registered, the applicant shall be challenged for having received or accepted, or for having offered to receive or accept, or for having paid, transferred or delivered, or for having offered or promised to pay, transfer or deliver, or for having contributed or offered or promised to contribute to another to be paid or used, any money or other valuable thing as a compensation, inducement or reward for the registering or abstaining from registering of anyone qualified to register, the registration officer shall administer to the person so challenged an oath or affirmation, as follows:
"You do solemnly swear upon the Holy Evangels of Almighty God (or "You do solemnly, sincerely and truly declare and affirm") that you have not received or accepted or offered to receive or accept, or paid, transferred or delivered, or offered or promised to pay, transfer or deliver, or contributed or offered or promised to contribute to another, to be paid or used, any money or other valuable thing as a compensation, inducement or reward for the registering or abstaining from registering of anyone qualified to register at the registration for this present year, so help you God" (or "so you do solemnly, sincerely and truly declare and affirm").
Such oaths or affirmations shall be conclusive evidence to the registration officers of the truth of such oath or affirmation, but if any such oath or affirmation is false, the person making the same shall be guilty of perjury, and no conviction thereof shall bar any prosecution under § 8 of Article V of the State Constitution. If any person so challenged refuses to make the oath or affirmation prescribed in this section, the registration officers shall enter the words "refused to make oath concerning bribery" in the appropriate space in the applicant's application for registration and the department shall place the original permanent registration record of the applicant in the special file or binder known as the "list of disqualified voters."
15 Del. C. § 2012