Republican Senate candidate Roger Marshall is ahead of Democrat Barbara Bollier in their open race to represent Kansas, according to a new poll.

Marshall, a House member since 2017, leads Bollier, a state senator who until 2018 was a Republican, 44% to 43%, a Public Policy Polling survey released on Friday found. While 15% of respondents remain undecided, Bollier has a double-digit advantage over Marshall among independents, 45% to 29%.