OTTAWA—The federal Conservative party raised substantially more money than the governing Liberals last year, as new Elections Canada figures show the Official Opposition has been filling its coffers ahead of a potential election this year. The Conservatives ended 2020 with a major surge in donations in the final quarter, while the Liberals also drummed up more contributions in the last three months of the year. The Conservatives raised $7.7 million from about 46,000 donors between October and December, according to Elections Canada, while the Liberal party says it drew in $6.5 million from some 48,000 donors. The contributions roughly doubled the Liberal party’s third-quarter sum, marking its best-ever quarter outside of an election year and its most lucrative fourth quarter on record—but not enough to make up for a year of lower figures. The Liberals raised about $15.1 million in 2020 compared to the Conservatives’ $20.7 million, according to totals …