Mr Berlusconi and his Forza Italia party have entered in pre-election coalition with the Eurosceptic Northern League and post-facist Brothers of Italy as the March poll looms.
Although Mr Berlusconi himself is barred from holding public office, the latest polls show that this coalition has a chance of winning power in the Italian election on March 4.
And Mr Berlusconi made a new appeal for support as he likened his party’s tax-cutting plans to those of JFK and vowed to keep the country’s deficit down to EU targets.
Kennedy announced a deep cut in taxes a few months before his death in 1963. And Mr Berlusconi said, when it was enacted by Lyndon B Johnson, the US Treasury saw revenues increase by 30 percent after inflation.
He told Radio 24: “The same happened when Ronald Reagan cut taxes more sharply in the 1980s, going from the maximum tax of 72 percent to the maximum tax of 27 percent.
“Here too there was a 30 percent increase in revenues. Margaret Thatcher did the same.
“We could set the rate at 23 percent and then gradually go down, as the positive effects will show up, maybe until 13 percent.”
The 81-year-old previously came out against his former ally Matteo Renzi over the then leader’s planned constitutional reforms.
Those changes would have ensures a clear winner at elections and lead to more stability in the Italian political system.
But Mr Berlusconi said he had not been against every proposal put forward by the former prime minister.
He said: “We rejected the constitutional reform proposed by Renzi because we considered it dangerous, but we have always said that the Constitution should be reformed in some points, starting with the direct election of the President of the Republic.
”We are absolutely willing to keep the commitments made by Italy with Europe. I imagine and I hope we can keep the commitment to reach a zero deficit within 2020.”
Europe is on high alert over the upcoming ballot, with fears the Northern league and similarly Eurosceptic Five Star Movement could grab power.
Both parties have previously called for a referendum on Italy’s use of the Euro.
(Additional reporting by Maria Ortega.)