Opposition leader Péter Magyar defeats Europe's longest-serving leader, promising closer EU ties and an anti-corruption drive.
With just shy of 99% of the votes counted, Hungary's opposition is on course to win two thirds of all the seats in parliament - the type of landslide victory that means they will be able to make sweeping changes to the country.
In doing so, Viktor Orbán, the man who has dominated Hungary's politics for 16 years, has been removed from office, the scale of the defeat so clear he conceded before counting had really even got going.
What Viktor Orbán did for the last 16 years in power was an experiment - but even he didn’t know what to call it.
His American friends liked to call it "national conservatism", which sounds better, but it was never strictly true, because unlike most conservatives, Orbán was a rebel, he constantly radicalised himself - so what could he conserve?
He portrayed himself as an "anti-globalist" but invited German car makers and Chinese and South Korean EV battery makers to Hungary.
He painted himself as the champion of national sovereignty, but refused to stand up for Ukrainian sovereignty against Russia.
He railed against immigration, but quietly encouraged immigration to build his new factories.
One year after winning a two-thirds majority in 2010, he wrote a new constitution, reshaping Hungary in his own image, to suit his own party.
He pushed through one law after another, to change the structure of the courts, the electoral system, and the economy.
But on Sunday, Hungarians decisively told him: "We don't want to be experimented on any longer.".
Péter Magyar is set to replace his former ally Viktor Orbán as prime minister of Hungary after pulling off a massive election win.
The 45-year-old became interested in politics from an early age and studied law at a Catholic university in Budapest, before joining Orbán's Fidesz party shortly after it lost power in 2002.
He was an important behind-the-scenes figure within the group for over two decades, despite being little known to the wider public.
The political importance lies in whether the issue moves from public comment into formal action, party response, court record, election authority notice or administrative decision.
For public institutions and political groups, the next test is whether the issue remains a public argument or turns into a formal response, legal proceeding, administrative instruction or election-related communication.
