That is, we need to consider utility for the median voter in country 1 when it moves from autarky to free trade with countries (2, 3) combined. The best hole setup generally occurs on a pullback to test the break, but a tight sell stop placed just above the open may produce fast and substantial profits. Industry prices were treated as equal across countries (due to free trade), so it was only the technology parameters and factor endowments that appeared in the GDP function.