| Election Name: | 1970 United States Senate election in Texas |
| Country: | Texas |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1964 United States Senate election in Texas |
| Previous Year: | 1964 |
| Next Election: | 1976 United States Senate election in Texas |
| Next Year: | 1976 |
| Election Date: | November 3, 1970 |
| Image1: | File:Lloyd Bentsen crop.jpg |
| Nominee1: | Lloyd Bentsen |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 1,194,069 |
| Percentage1: | 53.55% |
| Nominee2: | George H. W. Bush |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 1,035,794 |
| Percentage2: | 46.45% |
| U.S. Senator | |
| Before Election: | Ralph Yarborough |
| Before Party: | Democratic Party (United States) |
| After Election: | Lloyd Bentsen |
| After Party: | Democratic Party (United States) |
The 1970 United States Senate election in Texas was held on November 3, 1970. Incumbent Democratic U.S. Senator Ralph Yarborough was defeated by former U.S. Representative Lloyd Bentsen in the Democratic primary. Bentsen then defeated Republican U.S. Representative and future president George H. W. Bush in the general election. When Bush was running for president in 1988, his Democratic opponent, Massachusetts Governor Michael Dukakis, selected Bentsen as his vice presidential running mate.
Yarborough, a liberal icon, was challenged by the more conservative Bentsen in the Democratic primary. In what was characterized as an extremely bitter campaign, Bentsen accused Yarborough of supporting desegregation busing and criticized his opposition to the Vietnam War.[1] Many Texas liberals threatened to support the Republican Bush if Bentsen won the primary, believing that the liberal wing of the Texas Democratic Party would be threatened if Bentsen were elected. Bentsen ultimately defeated Yarborough in the Democratic primary on May 2, 1970.[2]
Bush was unopposed for the Republican nomination.
The general election was held November 3, 1970. Bentsen defeated Bush, 53.5% – 46.5%.[3]