After a long battle with vascular Parkinson's disease, Bush died at his home on November 30, 2018. Nixon considered selecting Bush as his running mate in the 1968 presidential election, but he ultimately chose Spiro Agnew instead. Bush won re-election to the House unopposed, while Nixon defeated Hubert Humphrey in the presidential election. In 1970, with President Nixon's support, Bush gave up his seat in the House to run for the Senate against Yarborough. Bush easily won the Republican primary, but Yarborough was defeated by the more centrist Lloyd Bentsen in the Democratic primary. Ultimately, Bentsen defeated Bush, taking 53.5 percent of the vote. 'George H. W. Bush: Life Before the Presidency'.