Hart played an active role in the race for majority leader in early 2006. As a top whip for the successful candidacy of Rep. John Boehner (R-OH), she worked to secure votes for him in the race. She was one of a handful of GOP members who called for a full set of new leadership elections for whip, conference chair, and other offices below the majority leader position, but that motion narrowly failed the day before the majority leader race. Had this motion passed, Hart may have challenged Rep. Deborah Pryce (R-OH) for House Republican Conference Chairman, the No. 4 leadership spot.