Alternative for Germany, a far-right political party under surveillance by intelligence services for suspected extremism, made huge gains in the German general election Sunday, with the center-right Christian Democratic Union likely to lead coalition talks to form the next government.

Exit polls show the center-right Christian Democratic Union party leading, with the AfD party heading towards the strongest showing of the far-right since World War II.

Center-right opposition leader Friedrich Merz claimed victory in Germany’s national election on Sunday after exit polls showed his bloc in the lead.