By Massimiliano Di Giorgio
ROME (Reuters) - The leader of Italy's far-right Northern League on Tuesday called the euro "a failed experiment" and presented outspoken anti-euro economists among his election candidates, widening divisions with his ally Silvio Berlusconi.
The four-times prime minister Berlusconi is presenting himself as a moderate, pro-European figure ahead of the March 4 vote, and on Monday he met EU leaders in Brussels where he promised Italy would keep its budget deficit inside EU limits.
The two parties signed a joint program last week pledging an "end to austerity" and promising a "revision of EU treaties" but making no reference to leaving the euro.
But League leader Matteo Salvini on Tuesday ramped up his euroskeptic rhetoric, calling the euro "a failed experiment that has hurt Italy's economy". He added: "A country that does not control its currency is not a free country."
Salvini also took issue with Berlusconi's pledge to hold the deficit below 3 percent of national output.
"If that 3 percent damages Italian families, as far as we are concerned it doesn't exist," he said.
Salvini was presenting the election candidacies of Claudio Borghi and Alberto Bagnai, two of Italy's most euroskeptic economists, who both advocate an end to budget restraint and a break-up of the currency bloc.
Presenting his party as the only alternative for voters fed up with the euro, Salvini attacked the anti-establishment 5-Star Movement, which has backtracked on a plan for a referendum on the euro, for "changing its position 360 degrees".
Borghi, who is the League's economic spokesman but does not yet sit in parliament, has drawn up a plan to issue small denomination, interest-free bonds to firms and individuals owed money by the state as payment for services or as tax rebates.
He has said he sees the scheme, which was adopted as part of the center-right's election program, as a form of parallel currency which will prepare Italy for an eventual euro exit.
Borghi will compete in the Tuscan city of Siena against the current Economy Minister Pier Carlo Padoan, an orthodox, pro-euro economist running for the ruling Democratic Party.
The uneasy conservative alliance, which also includes the extreme-right Brothers of Italy, is polling at around 37 percent, meaning it would win most seats in parliament but probably be unable to form a government.
Berlusconi and Salvini have agreed that whichever party gets most votes will pick the bloc's candidate for prime minister. Forza Italia is polling about four points ahead of the League, but Berlusconi cannot run himself because of a 2013 tax fraud conviction.
(Writing by Gavin Jones; Editing by Catherine Evans)