Click here to watch "Turn."

After being beaten to the airwaves by Barack Obama in Texas, Ohio, Pennsylvania, North Carolina and Indiana, Hillary Rodham Clinton has once again followed closely behind her opponent with a new ad buy in Oregon -- her first advertising in the state.

The move has symbolic importance given the ongoing calls for Clinton to concede the nomination to Obama; by investing in Oregon before Indiana or North Carolina have voted, she signals her commitment to fight on in the Beaver State's May 20 primary regardless of the outcome in those two states tomorrow.

"Turn" represents something of a scrapbook of past Clinton advertising, mixing together footage and policy proposals from several previous ads. It's clearly tailored for Oregon Democrats, however, opening with Clinton addressing the state's voters directly and going on to tout her pledges to withdraw troops from Iraq within 60 days and create more green jobs. "It's going to take a fighter to meet these challenges," Clinton concludes, reminding voters once again of the talking point that has become her candidacy's raison d'etre.