 Consequently, by the early 1930s, the original Radical Republican Party had been pushed from the left to the centre and the centre-right, preferring to make alliances with anti-socialist and nationalist parties of the liberal and religious right.That process (see sinistrisme) was broadly similar to the path taken in France by the antisocialist anticlericals known as the National Radicals 

In its early years, the party was heavily anchored in Lerroux's fiefdom of Barcelona, which rendered difficult the task of creating either a social-democratic political movement or a regionally-focussed Catalanist Radical movement.In 1910, the Radical-Republicans first entered parliament, via an electoral bloc with socialists and other Radicals and republicans, known as the "Conjunción Republicano-Socialista" (Republican and Socialist coalition).