[1] The nationwide constituency for the 102-member Senate was contested by 16 lists, comprising 948 candidates.

Incumbent President Álvaro Uribe maintained an absolute majority of seats in the Senate.

The Liberals, which consists the main opposition party in the Senate, achieved 15.8% of the votes and kept its 18 seats.

It became the fourth political force in the country, surpassing the Radical Change, also in the Uribe coalition, which achieved 7.97% of the votes and also eight seats, losing seven.

The Citizens Commitment for Colombia achieved 1.6% of the votes and gained no seats.