In the 1985 regional election UP won 1.1% of the vote under the banner of Liga Veneta.
[1] In the 1987 general election Gremmo formed an alliance with Umberto Bossi's Lega Lombarda, but was damaged by the split led by Farassino, Mario Borghezio and Renzo Rabellino, who formed Autonomist Piedmont (PA).
[2][3] In 1989 Bossi welcomed both UP and PA into his Lega Lombarda – Alleanza Nord coalition for the European Parliament election.
Gremmo refused to join forces again with Farassino and Borghezio, who were separatists while he was a federalist, and resigned from editor of Lombardia Autonomista, the official publication of Lega Lombarda.
Subsequently, he refused to participate to the founding process of Lega Nord and UP started its decline.