Mette Frederiksen holds a strong lead in the market for Denmark’s next prime minister because her Social Democrats emerged as the largest single party in the March 2026 parliamentary election despite posting their weakest national result in over a century. No bloc secured a majority in the 179-seat Folketing, leaving the Moderates as pivotal kingmakers and triggering extended coalition talks that collapsed after seven weeks. King Frederik X responded by assigning Venstre leader Troels Lund Poulsen to negotiate a center-right government excluding the Social Democrats and Moderates, lifting his odds while Lars Løkke Rasmussen of the Moderates retains leverage to tip the balance. Traders assign Frederiksen the highest implied probability because she remains caretaker prime minister and her party’s plurality historically favors it in forming the next administration, though the fragmented seat distribution and ongoing negotiations keep alternative outcomes in play.