Acknowledging that it will be extremly difficult, Ulf Kristersson said that he "would do everything in his power to form a government of the centre-right Alliance."
Speaker Andreas Norlén announced that he had given the Moderate party leader his mandate after holding a second round of talks with the leaders of the eight parties in parliament.
Norlén explained his decision by saying that, although Stefan Löfven of the Social Democrats represents the biggest party of the biggest traditional block in parliament, Kristersson is part of the 'bigger group' in parliament that last week voted against Löfven continuing as prime minister. Norlén said that 'there is a logic to give the person who has ousted a government the chance to try to take over'.
The anti-immigration Sweden Democrats, with 62 seats, have said they will not support an Alliance or a centre-left government without gaining influence over policy.