NASHVILLE, Tenn. (AP) -- Tennessee superdelegate Vicky Harwell has decided to endorse Hillary Clinton's bid for the Democratic nomination for president.

Harwell, the 51-year-old president of the Tennessee Federation of Democratic Women, says in a statement that Clinton's overwhelming win in West Virginia shows she is the best candidate to take on Republican nominee John McCain in November.

Harwell is the sixth Tennessee superdelegate to endorse Clinton, while four have endorsed Barack Obama.

Seven Tennessee superdelegates remain uncommitted, including former Vice President Al Gore and Gov. Phil Bredesen.

Clinton won Tennessee's primary in February with 54 percent of the vote.

(Copyright 2008 by The Associated Press. All Rights Reserved.)