Italian Interior Minister and Deputy PM Matteo Salvini | Tiziana Fabi/AFP via Getty Images Italian right-wing coalition triumphs in regional election Alliance including Matteo Salvini’s League wins in Basilicata.

MILAN — A right-wing alliance has ended the Italian center left's 24-year rule in the southern region of Basilicata.

The final count of Sunday's regional election, completed at midday Monday, showed the coalition's candidate won 42 percent of the vote, followed by the center left with 33 percent.

The populist 5Stars, who are in national government with the far-right League, halved their votes compared to last year's general election — coming in last with only 20 percent of the vote.

In regional elections, the League — led by Deputy Prime Minister Matteo Salvini — remains allied to Silvio Berlusconi's Forza Italia and the Brothers of Italy party, despite its coalition with the 5Stars in Rome.

The outcome of the election in the small region located on the arch of Italy's boot resembles results of previous regional elections in Abruzzo and Sardinia last month, where the right also ousted the center left from regional governments and the 5Stars plummeted compared to the 2018 general election.

On Monday, 5Stars leader Luigi Di Maio dismissed claims that the populist movement is losing ground to its far-right partners in government: "We beat everyone, we're the first party in Basilicata, back in 2013 [at the last regional elections] we had 8 percent," he said.

Unlike Italy's other main parties, the 5Stars did not join a coalition and ran on their own in all three regional elections this year.

Salvini celebrated his party's result on Facebook. "The League tripled its votes in just one year," he wrote, comparing the party's score to last year's general election. "Goodbye to the left, and now let's change Europe."

In the upcoming European election, the League will not run in a coalition with its right-wing allies, but on its own. POLITICO's projections predict the far-right party will win 28 seats in the European Parliament — a gain of 23 seats on its result in 2014.

On the center left, a number of officials from the Democratic Party had harsh words for their own camp. They noted that since former Prime Minister Matteo Renzi's resignation as party leader last year, the PD has lost a string of regional elections: "Today, without him, everyone is happy about a second place ... happy losers," said MP Luciano Nobili.

While both League and 5Star officials dismissed suggestions that the recent regional elections would have repercussions for their government, political analysts and some lawmakers say the coalition might not survive if the European election results end up being similar.

"The problem now is that if the League keeps up these excellent results and the PD recovers from last year's deadly 19 percent [in the general election], it would be in the interest of both to call a snap election after the EU vote," one 5Star lawmaker said.