Yousaf becomes the first to publicly announce his intention to stand in the race after Sturgeon’s surprise resignation earlier in the week saying she had become too divisive and too tired to carry on.

“I have decided to put myself forward as a candidate to become Scotland’s next First Minister, and Leader of the SNP,” the 37-year old, who has been a member of the Scottish parliament since 2011 and has also held several ministerial roles, said on Twitter.

John Swinney, the 58-year-old deputy first minister, ruled himself out Thursday, saying his decision not to be a candidate was to create the space for a “fresh perspective” on the governing SNP’s aims, including on independence.

The SNP has said it will choose a new leader within six weeks through a ballot of its members, which will close on March 27. Sturgeon, 52, said she was not leaving politics and that she would stay on until a successor has been picked.

Her unexpected exit has left a question mark over the SNP’s fight for independence as the Westminster government has blocked its attempts to hold a second vote after a 2014 referendum in which Scotland voted 55 percent to 45 percent to remain part of the United Kingdom.

The loss of Sturgeon, regarded by many as the best political communicator in Britain, also has the potential to influence the outcome of the next national election if it helps the opposition Labour Party to regain some of the seats it once held in Scotland.