Sweden's right-wing opposition parties were on track to win a narrow majority of 175 seats in the 349-seat parliament on Sunday, beating the ruling centre-left, the country's election authority said as 78% of districts had reported results.
If confirmed, Moderate Party leader Ulf Kristersson is expected to become prime minister while the anti-immigration, far-right Sweden Democrats would be the biggest right-wing group and gain direct influence on policy for the first time.
The race remained tight, with a significant number of votes still to be counted.
The right-wing bloc consists of the Moderates, the Liberals, the Christian Democrats and the Sweden Democrats.
(Reporting by Anna Ringstrom, editing by Terje Solsvik)
