Spain's Ciudadanos says will play key role in forming government

MADRID (Reuters) - Spain's market-friendly Ciudadanos said on Sunday it will play a key role in forming a majority government after it won 40 seats in general elections, coming fourth after fellow newcomer, leftist Podemos. "We will be decisive in forming a majority administration that will be able to change this country," Rivera told supporters. (Reporting By Jesús Aguado; Editing by Sonya Dowsett)