Politicians from the German AfD, the right-wing national Rassemblement National from France and the Polish PiS congratulated Giorgia Meloni on winning the elections in Italy.
According to initial projections, the Roman woman and her radical right-wing Fratelli d'Italia were clearly the strongest party in the parliamentary elections and, with a right-wing alliance in the two chambers, also won the absolute majority of seats.
"We're celebrating with Italy!" Wrote AfD member of parliament Beatrix von Storch on Twitter late on Sunday evening.
Her party colleague Malte Kaufmann tweeted: "A good day for Italy - a good day for Europe." Referring to the recent elections in Sweden, in which the right was also successful, von Storch wrote: "Sweden in the north, Italy in the south: Left-wing governments are so yesterday.”
Polish Prime Minister Mateusz Morawiecki wrote on Twitter "Congratulations @Giorgia Meloni".
French MEP Jordan Bardella from Marine Le Pen's Rassemblement National (RN) wrote on Twitter that the Italians had given EU Commission President Ursula von der Leyen "a lesson in humility".
The German politician said last week that her agency had "tools" if Italy, under a right-wing government, failed to comply with EU rules.
"No threat of any kind can stop democracy," wrote the RN party leader.
"The peoples of Europe lift up their heads and take back control of their destiny."