"Matteo Salvini and the League were initially the junior partner, having won 17 percent of the vote in the last election, with the Five Star Movement winning 38 percent. Those numbers have now flipped, so Salvini made a strategic decision to leave the coalition, causing the prime minister Giuseppe Conte to resign and the government to collapse.
It is widely accepted that the Five Star Movement is not as capable as the League in governing the country. The former will likely form a new government with the Democratic Party, which is also left-wing but very much technocratic and part of the establishment. It will be interesting to see if ideology and their dislike of the League will hold these parties together, or if the populist-elite division breaks up the coalition, resulting in new elections and a likely victory for the League."