The Radicals joined with the Whigs and the anti-protectionist Tory Peelites to form the Liberal Party by 1859.

In 2005, the Italian Radicals joined Italian Democratic Socialists and founded the Rose in the Fist electoral coalition.

After the Dreyfus Affair, Radicals joined forces with other Republicans and some Socialists in Pierre Waldeck-Rousseau's cabinet (1899-1902).

By the middle of the century parliamentary Radicals joined with others in the Parliament of the United Kingdom to form the Liberal Party, eventually achieving reform of the electoral system.

February 1 - Radicals in Lithuania, Belarus, Latvia, northern Ukraine and western Russia join the January Uprising.

After Reconstruction, many Radicals joined the Stalwarts, which supported machine politics and opposed civil service reform.

However, the Radicals joined with the Front for Victory to approve his nomination.

Also some former Liberals, Republicans, Radicals, Socialists and Social Democrats now members of Forza Italia could join the new political group.

For the 1921 general election the Radicals joined forces with several minor liberal parties in order to form the Democratic Liberal Party.

Radicals, ex-Peronists, writers and intellectuals joined urban guerillas, creating even further havoc.