Question: Which magazine named this American politician as one of America's Best Senators in 2006, whom Mark Lawrence challenged for the 2000 U.S. Senate election and lost?

full_context: Document 1: Mark E. Clayton: Mark E. Clayton (born 1977) is an American politician who was the Democratic nominee in the 2012 U.S. Senate election in Tennessee. In the August 2 primary election, Clayton received his party's nomination with roughly 30 percent of the vote in a multi-candidate field. There is no runoff election in Tennessee; therefore with less than a third of the votes cast, Clayton became his party's nominee. The day after his nomination, the Tennessee Democratic Party disavowed his candidacy, citing Clayton's conservative and libertarian views. Clayton lost to incumbent Republican Bob Corker in the November 6 general election.
Document 2: United States Senate election in Tennessee, 2006: The 2006 United States Senate election in Tennessee was held on November 7, 2006. The election winner, Bob Corker, served his term between January 3, 2007 and January 3, 2013. Corker replaced Republican Bill Frist in the Senate, who retired upon the end of his second term in 2007. Corker was the Republican nominee, and the Democratic nominee was Harold Ford, Jr.. The race between Ford and Corker was one of the most competitive Senate races of 2006, with Corker winning the race by less than three percent of the vote. Corker was the only non-incumbent Republican to win a U.S. Senate seat in 2006. Since 1994, the Republican Party has held both of Tennessee's Senate seats.
Document 3: Mary Small (politician): Mary Small (born September 12, 1954) is an American politician from Maine. A Republican, Small served in the Maine House of Representatives from 1979 to 1994 and the Maine Senate from 1994 to 2002. From 2000 to 2002, Senator Small served as the Republican Floor Leader. Small was unable to seek re-election in 2002 due to term-limits. Small represented Bath, Maine and Sagadahoc County.
Document 4: Maine gubernatorial election, 1986: The 1986 Maine gubernatorial election took place on November 4, 1986. Incumbent Democratic Governor Joseph Brennan was term limited and unable to seek re-election. First district Congressman John McKernan defeated Democratic Party challenger James Tierney as well as former Republican turned Independent Sherry Huber and former Portland, Maine city manager John Menario, making McKernan the first Republican to win The Blaine House in since 1968.
Document 5: Mark Earley: Mark Lawrence Earley (born July 26, 1954) is an American politician and Virginia lawyer. As a member of the Republican Party, he was elected to the Virginia State Senate (1988–1998), and then elected Attorney General of Virginia (1998 to 2001). In 2001, he resigned as Attorney General to focus his time on the 2001 campaign for Governor of Virginia. He ran to succeed James Gilmore, but lost to businessman and Democratic Party leader Mark Warner.
Document 6: Jeff Flake: Jeffry Lane Flake (born December 31, 1962) is an American politician and member of the Republican Party who since 2013 has served as the Junior United States Senator from Arizona alongside former 2008 presidential nominee John McCain.
Document 7: Olympia Snowe: Olympia Jean Snowe (born February 21, 1947) is an American politician who was a United States Senator from Maine from 1995 to 2013. Snowe, a member of the Republican Party, became widely known for her ability to influence the outcome of close votes, including whether to end filibusters. In 2006, she was named one of America's Best Senators by "Time" Magazine. Snowe was famously known for her ability to compromise and her strong sense of bipartisanship. Along with Susan Collins, she was considered one of the most moderate Republicans in office.
Document 8: Charlie Summers: Charles E. "Charlie" Summers, Jr. (born December 26, 1959) is an American politician, businessman, Iraq War veteran and member of the Republican Party from the state of Maine. A member of the Maine Senate from 1991 to 1995, Summers ran for the Republican nomination for Maine's 1st congressional district in 1994, coming second in the primary. He was the nominee for the same seat in 2004 and 2008, losing on each occasion to the Democratic candidate. From 2011 to 2013 served as the Secretary of State of Maine. He was the Republican nominee for the U.S Senate to succeed the retiring Republican Olympia Snowe in the 2012 election, but lost to former Independent Governor Angus King.
Document 9: Maine gubernatorial election, 1958: The 1958 Maine gubernatorial election took place on September 8, 1958. Incumbent Democratic Governor Edmund Muskie, was term limited and seeking election to the United States Senate, thus did not run. Democrat Clinton Clauson, then mayor of Waterville, unexpectedly defeated Muskie's chosen Democratic candidate in the primary, and faced off against the popular previous two term Republican Governor, Horace A. Hildreth in the general election. Hildreth was the heavy favorite to win, however Clauson was able to narrowly defeat him, retaining the Blaine House for the Democrats.
Document 10: United States Senate election in Maine, 1978: The 1978 United States Senate election in Maine was held on November 7, 1978. Incumbent Democratic United States Senator William Hathaway decided to run for re-election to a second term, but was defeated by William Cohen, the Republican nominee and the United States Congressman from Maine's 2nd congressional district.
Document 11: Sherry Huber: Sherry E. Huber (born 1938) is an American politician and environmentalist. Huber, a resident of Falmouth, Maine, was a Republican member of the Maine House of Representatives from 1976 to 1982. Considered a moderate, Huber focused much of her time in the legislature on energy issues. In 1982, Huber ran for Governor of Maine, finishing second in the Republican primary behind Charles Cragin. She became the first woman ever to run in the Republican Party for Governor of Maine while, in the same election, Rep. Georgette Berube challenged incumbent Democrat Joseph Brennan. Huber ran unenrolled in 1986, finishing third with 15.7%. During the 1986 election, Huber was unanimously endorsed by the Maine Lesbian-Gay Political Alliance. In 2008, Huber was named as a notable Republican supporter of Democratic presidential candidate Barack Obama. She has been the long-time Executive Director of the Maine Timber Research and Environmental Education Foundation (Maine TREE).
Document 12: Mark Lawrence (politician): Mark W. Lawrence (born June 27, 1958) is an American lawyer and politician from Maine. He was born in Kittery, Maine, the Democrat, Lawrence served in the Maine State Legislature from 1988-2000. He was elected as the President of the 118th Maine Senate in December 1996 and then elected as President of the 119th Maine Senate in December 1998, serving in that capacity until 2000. He challenged Republican incumbent Olympia Snowe in the 2000 U.S. Senate election and lost. He lost in the Democratic primary for the open seat in the 1st congressional district in 2008. He served from 2003-2010 as the York County District Attorney and did not seek re-election in 2010. He returned to private practice in South Berwick, Maine. In November 2016, he was elected to the Maine House of Representatives.
Document 13: United States Senate election in Maine, 2000: The 2000 United States Senate election in Maine was held November 7, 2000. Incumbent Republican U.S. Senator Olympia Snowe was re-elected to a second term, defeating Democratic candidate Mark Lawrence.
Document 14: Sylvia Larsen: Sylvia Larsen is a New Hampshire politician who was a Democratic member of the New Hampshire Senate and its longest serving Democratic female leader. She represented New Hampshire's 15th State Senate District for 20 years, from 1994 through 2014. From 2006 through 2010, during the period when Democrats had regained control of the chamber, Larsen served as Senate President. Between 2008-2010, Larsen made history as she led the nation's first female majority legislative body with 13 women and 11 men. Legislative accomplishments include sponsoring the nation' s first tax-free college savings 529 plan, the Unique Plan, and NH's first paycheck fairness plan safeguarding equal pay for equal work.
Document 15: Jane Amero: Jane A. Amero (born August 6, 1941) is an American teacher and politician from Maine. Amero, a Republican, served in the Maine State Senate from 1992-2000, representing her residence in Cape Elizabeth, Maine and nearby areas of Cumberland County. Prior to serving in the State Senate, Amero served in local government for 15 years, including 6 years on the Cape Elizabeth School Board and 9 years on the Cape Elizabeth Town Council. Amero also chaired the State Board of Education for three years. Amero served as the highest ranking elected Republican in Maine government from 1996 to 2000, when she was twice elected by her colleagues as Minority Leader of the Maine Senate. Unable to run again due to term-limits, Amero challenged Democrat Tom Allen for Congress in 2000. In a three way race which also featured Libertarian Party candidate Frederic Staples, Amero garnered 36.5% of the vote, losing to the incumbent Allen.
ground_truth: Time