Question: The person Ed Zschau lost to in 1986 served as a United States Senator from California between what years?

Context paragraphs:
George Clement Perkins: George Clement Perkins (August 23, 1839February 26, 1923) was a U.S. Republican politician, who was the 14th governor of California from January 8, 1880, to January 10, 1883, and a United States senator from 1893 until 1915.  He also served in the California State Senate.  He was the third longest-serving senator in California history, after Hiram Johnson and Alan Cranston, serving 22 years.  He was criticized by some for supporting business too much during his time in the Senate .  During Perkins' term as governor, former Civil War general John Mansfield served as his lieutenant governor.

Alan Cranston: Alan MacGregor Cranston (June 19, 1914 – December 31, 2000) was an American politician and journalist who served as a United States Senator from California, from 1969 to 1993.

Robert Byrd: Robert Carlyle Byrd (born Cornelius Calvin Sale Jr.; November 20, 1917June 28, 2010) was a United States Senator from West Virginia.  A member of the Democratic Party, Byrd served as a U.S. Representative from 1953 until 1959 and as a U.S. Senator from 1959 to 2010.  He was the longest-serving Senator in United States history.  In addition, he was, at the time of his death, the longest-serving member in the history of the United States Congress, a record later surpassed by Representative John Dingell of Michigan.  Byrd was the last remaining member of the U.S. Senate to have served during the presidency of Dwight Eisenhower, and the last remaining member of Congress to have served during the presidency of Harry Truman.  Byrd is also the only West Virginian to have served in both houses of the state legislature and both houses of Congress.

Ted Kennedy: Edward Moore "Ted" Kennedy (February 22, 1932 – August 25, 2009) was an American politician and lawyer who served as a United States Senator from Massachusetts for over forty years from 1962 until his death in 2009.  A member of the Democratic Party, he was the second most senior member of the Senate when he died and was the fourth-longest-continuously-serving senator in United States history, having served there for almost 47 years.  Ted Kennedy was the most prominent living member of the Kennedy family for many years, and he was also the last surviving, longest-living, and youngest son of Joseph P. Kennedy, Sr. and Rose Kennedy.  He was the youngest brother of John F. Kennedy, the 35th President of the United States and Senator Robert F. Kennedy, both victims of assassination, and the father of Congressman Patrick J. Kennedy.

Max Baucus: Max Sieben Baucus (born Max Sieben Enke, December 11, 1941) is an American diplomat who was a United States Senator from Montana from 1978 to 2014.  A member of the Democratic Party, Baucus served as Senator for nearly 36 years, making him the longest-serving Senator in Montana history.  On December 26, 2013, President Obama nominated Baucus to replace Gary Locke as the United States Ambassador to China.  He served in that position from 2014 to 2017, until President Trump fired all serving US ambassadors in 2017.

Liberty Hall (New Jersey): The Liberty Hall Museum in Union, Union County, New Jersey, United States, is an American historic site.  Built in 1772 as a fourteen-room Georgian-style house, Liberty Hall stands today a fifty-room Victorian Italianate mansion.  Liberty Hall has been home to many historical figures and was the home of William Livingston, the first Governor of New Jersey, who served from 1776 to 1790; United States Supreme Court Justice Henry Brockholst Livingston; the Kean political dynasty, including Susan Livingston Kean, widow of Continental Congress delegate John Kean, United States Senator and Congressman John Kean, and Captain John Kean, son of United States Senator Hamilton Fish Kean; and, in its first year of occupancy, future Treasury Secretary Alexander Hamilton.  Liberty Hall has had visitors of such stature as George Washington, Martha Washington, Lewis Morris, Marquis de Lafayette, Elias Boudinot, and John Jay, the latter of whom was married there.

Patrick Leahy: Patrick Joseph Leahy (born March 31, 1940) is an American politician and the senior United States Senator from Vermont, since 1975.  A member of the Democratic Party, Leahy served as the President pro tempore of the United States Senate from December 17, 2012, to January 6, 2015.  As President pro tempore, he was third in the presidential line of succession.  He is the most senior senator and took office at 34 years old, younger than any other current senator.  Leahy received the title of President pro tempore emeritus upon the commencement of the 114th Congress.  He is the last remaining member of the Senate to have served prior to the 1976 election of President Jimmy Carter.

Ed Zschau: Edwin Van Wyck "Ed" Zschau ( ; born January 6, 1940) represented California's 12th District in the United States House of Representatives from 1983 to 1987.  In 1986 he ran as the Republican candidate for a seat in the United States Senate.  He defeated conservative Bruce Herschensohn and Congresswoman Bobbi Fiedler in the primary but then lost to incumbent Democrat Alan Cranston by a narrow margin.

Presiding Officer of the United States Senate: The Presiding Officer of the United States Senate is the person who presides over the United States Senate and is charged with maintaining order and decorum, recognizing members to speak, and interpreting the Senate's rules, practices, and precedents.  Senate presiding officer is a role, not an actual office.  The actual role is usually performed by one of three officials: the Vice President of the United States, an elected United States Senator, or the Chief Justice of the United States (but the last only in special cases).  Outside of the constitutionally mandated roles, the actual "appointment" of a person to do the job of presiding over the Senate as a body is governed by Rule I of the Standing Rules of the United States Senate.

Wendell Ford: Wendell Hampton Ford (September 8, 1924 – January 22, 2015) was an American politician from the Commonwealth of Kentucky.  He served for twenty-four years in the U.S. Senate and was the 53rd Governor of Kentucky.  He was the first person to be successively elected lieutenant governor, governor and United States senator in Kentucky history.  The Senate Democratic whip from 1991 to 1999, he was considered the leader of the state's Democratic Party from his election to governor in 1971 until his retirement from the Senate in 1999.  At the time of his retirement, he was the longest-serving senator in Kentucky's history, a mark which was then surpassed by Mitch McConnell in 2009.

Supporting paragraphs: Ed Zschau Alan Cranston
Answer: 1969 to 1993