Which Italian political group supported Louis IV during his expedition to Italy?

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During his expedition to Italy, Louis IV was supported by the Ghibellines.1

The Ghibellines were a medieval Italian political faction that sympathized with the Holy Roman emperors and opposed the pro-papal Guelfs. Their support for Louis IV during his 1327–1330 expedition represented a brief revival of Ghibellinism, which was characterized by a nostalgia for the empire.23