MILAN—Two wealthy regions of northern Italy began voting on Sunday in referendums for autonomy, ballots that could fan regional tensions in Europe at a time when neighboring Spain is striving to prevent Catalonia from breaking away.
Lombardy and Veneto, regions that are both run by the once openly secessionist Lega Nord party, are holding non-binding votes which the party hopes will deliver it a mandate to negotiate better financial deals from Rome.
