In the 2015 election, despite the large gains by the Liberals under Justin Trudeau, who now had 27% of the vote in the riding, Carrie was re-elected with 38% of the vote. The NDP did fall, but not as much as the Conservatives to 31%. Shortly after the election, Carrie was appointed to be the Conservatives' Deputy Health Critic. In April 2016, Carrie was promoted to Health Critic. By the 2019 election, Carrie had become the Shadow Cabinet Secretary for Canada-US relations and Economic Development in Southern Ontario.