Hormando Vaca Diez died (February 9th 2010)was formerly president of the upper house

Upper house

An upper house, often called a senate, is one of two chambers of a bicameral legislature, the other chamber being the lower house; a legislature composed of only one house is described as unicameral.- Possible specific characteristics :...

 (Senate) of the Bolivia

Bolivia

Bolivia officially known as Plurinational State of Bolivia , is a landlocked country in central South America. It is the poorest country in South America...

n National Congress

National Congress of Bolivia

The Plurinational Legislative Assembly also known as the National Congress is the national legislature of Bolivia, based in the nation's de facto capital, La Paz....

. In line for the post of president after Carlos Mesa

Carlos Mesa

Carlos Diego Mesa Gisbert is a Bolivian politician, historian and President of Bolivia from October 17, 2003 until his resignation on June 6, 2005....

's resignation, he declined amid protests against him, in a televised speech where he stated that the recent protests were caused by Carlos Mesa

Carlos Mesa

Carlos Diego Mesa Gisbert is a Bolivian politician, historian and President of Bolivia from October 17, 2003 until his resignation on June 6, 2005....

 and Evo Morales

Evo Morales

Juan Evo Morales Ayma , popularly known as Evo , is a Bolivian politician and activist, currently serving as the 80th President of Bolivia, a position that he has held since 2006. He is also the leader of both the Movement for Socialism party and the cocalero trade union...

. He died on February 9, 2010, in a quinta in the city of Warnes, due to a heart attack.