 As NH GOP chair, she has attacked the state Democratic Party for what she has termed "Drive-Thru" voting.Horn contends that voting by out-of-state Democratic volunteers, including the niece of Vice President Joseph Biden, in New Hampshire elections is illegal and constitutes voter fraud.She accused Democratic State Senator Martha Fuller Clark of midwifing a "sanctuary of voter fraud" by allowing four out-of-state campaign volunteers to use her address for their voter registrations.