The appointment was just over one year after his failed 2007 senatorial bid.

But he lost his senatorial bid in 1923 because of an alleged defect in the party platform.

In the 2007 senatorial elections, Aquino actively campaigned for the senatorial bid of her only son, Noynoy Aquino, who ran successfully.

Due to term limits (he is on his third consecutive and final term), he briefly considered a senatorial bid in the 2013 election.

On December 10, 2003, Roxas resigned from his post to prepare for his senatorial bid under the banner of the Liberal Party in the 2004 elections.

While he insisted that his motives were to defend his administration, journalist Henry Watterson believed Taylor had promised to support Bradley's senatorial bid if elected.

As a centre-right pro business politician, he supported the senatorial bid of Hilda de Duhalde and sits with dissident Peronists in Congress, opposed to the government of the Kirchners.

On September 20, 2012 Vice President Jejomar Binay announced that Garcia withdrew her senatorial bid and will run for the House of Representatives instead.

During an unsuccessful senatorial bid in 1914, Stanley assumed an anti-prohibition stance.

Although he insisted he only wanted to defend his administration from Democratic attacks, Henry Watterson suggested that Bradley was seeking to enlist Taylor's support for his anticipated senatorial bid.