The change seems to be largely driven by Remain voters | Andy Buchanan/AFP/Getty Images Brexit boosts support for Scottish independence to 49 percent Polling company YouGov says rise driven by Remain voters.

Support for Scottish independence has risen to 49 percent, its highest level since 2015, according to a poll released Saturday.

Asked whether Scotland should be an independent country, 49 percent of respondents said "yes," according to a YouGov poll conducted this week for the Times. That's up from 45 percent in June 2018.

The change seems to be largely driven by Remain voters, the polling company said, with attitudes having flipped among this group. While a majority were against independence in 2018, 54 percent are now in favor according to the new poll.

First Minister Nicola Sturgeon said this week that Scotland should hold a referendum on independence before 2021 if the U.K. leaves the EU.

"If Scotland is taken out of the EU, a referendum within that timescale must be open to us," she said. "That would be our route to avoiding the worst of the damage that Brexit would do.”

However, YouGov reported 48 percent of Scots think there should not be another referendum in the next five years, compared to 42 percent who said there should be.

The results come as the pro-independence Scottish National Party meets Saturday in Edinburgh for its spring conference.

Scots rejected independence by 55 percent to 45 percent in a 2014 referendum.