But Turkish ministers and Mr Erdogan have said they need to respond to popular demand for the restoration of capital punishment to deal with the ringleaders of the July 15 coup bid.
Ankara has threatened to scrap the deal many times before.
But, embittered by a Dutch move to block Turkish ministers from holding rallies several days earlier, Mr Erdogan offered no congratulations, instead saying the Netherlands had lost a friend.
Turkish President Tayyip Erdogan is courting Turks overseas for support in an April 16 referendum that would grant him sweeping new powers.
On Thursday, the Turkish President accused the EU's top court of starting a "crusade struggle" against Islam after a ruling allowing European companies to ban employees from wearing political or religious symbols - including the Islamic headscarf.
The crisis took unprecedented turn when late on Monday Turkey announced the Dutch ambassador would be barred from returning to Ankara and that Turkey suspends high-level diplomatic relations with the Netherlands.
Whether the Turkish government's bluster in Europe and its turn to nationalism can translate to a bump in support at home ahead of the April 16th referendum remains to been seen.
"Many parties have received a similar share of votes".
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Gabriel said Germany should avoid reacting in kind to provocations from Turkey because that would only give Erdogan an enemy to direct his people's ire toward, arguing that the Turkish president "needs a bogeyman for his campaign".
European Union officials have repeatedly warned Turkey that reinstating the death penalty would bring an end to more than 50 years of trying to join the bloc.
With less than seven months up to the parliamentary elections in Germany, critics say Merkel has been conspicuously submissive in her approach to Erdogan for fear of him scrapping the refugee deal and thus destroying chances of her reelection.
"Is it the European Union or Turkey which is parting ways?" "We can criticise Germany and German politics, even harshly, but there are limits set by our laws".
Cengiz Aktar, senior scholar at Istanbul's policy centre, told Xinhua that if things go worse, there could be a potential risk of rupture in the accession talks launched between Ankara and Brussels in 2005.
He used an informal form of "you" in Turkish.
He added that Turkey has already begun taking retaliatory measures and that these would continue.