Up For Grabs Meaning

(idiomatic) Available for anyone to obtain, claim, decide, or win.

Example: 1998 April 13, Salman Rushdie, "Mohandas Gandhi," Time:
  Gandhi today is up for grabs. He has become abstract, ahistorical, postmodern, no longer a man in and of his time but a freeloading concept.
2006 Nov. 5, Robert Hicks, "Opinion: Separate but Equal," New York Times (retrieved 12 July 2011):
  The Senate is up for grabs in November's election.
2009 Nov. 18, Julie Schmit, "China pushes solar, wind power development," USA Today (retrieved 12 July 2011):
  "In the transformation of clean technology, it's up for grabs whether the giants will be American or Chinese or from other countries," says Salzman.