The Christian Democratic Union (Spanish: Unidad Democrática Cristiana, UDC) was a right-wing Christian-democratic political party in Bolivia. Political handbook of the world 1981. New York, 1981. P. 89.
In January 1979 the right-wing faction split from the Christian Democratic Party and founded the Christian Democratic Union. Led by René Bernal Escalante. Rolando Pereda Torres. Partidos políticos en América Latina. CIEPSAL, 1986. P.105.
In 1979 the Christian Democratic Union took part in an electoral coalition Popular Alliance for National Integration backing René Bernal Escalante. Elections in the Americas : a data handbook / ed. by Dieter Nohlen, Vol. 2. [Oxford] [u.a.]: Oxford Univ. Press, 2005. P.151.
In 1985 Christian Democratic Union allied with the Revolutionary Nationalist Movement and its candidate Víctor Paz Estenssoro.
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