[cnn-photo-caption image= http://i.l.cnn.net/cnn/2008/images/02/14/art.chelsea0214.ap.jpg caption="Chelsea Clinton campaigned for her mother in California in early February."]
(CNN) - As part of the Clinton campaign's declared effort to fight for every delegate in every state, Chelsea Clinton is heading to Hawaii, Barack Obama's home turf, according to a Clinton campaign source. She'll spend three days, including this weekend, campaigning there.
The Clinton campaign has been criticized for not competing in the smaller states and caucuses, but is now trying to adjust their strategy. A campaign source says they are not focused only on Texas and Ohio.
On conference call Wednesday, Clinton staffer Guy Cecil said the campaign would now be hiring staffers and opening field offices in several states with upcoming contests they had not devoted resources to before, including Montana and Wyoming.
Hillary Clinton has been endorsed by Sen. Daniel K. Inouye of Hawaii, and will be doing satellite interviews with Hawaiian TV today.
A campaign source says Chelsea has proven to be an effective campaigner and they see a strong correlation between Chelsea's visits and improved performance.
At this point, says one campaign source, it's a delegate fight, and even narrowing a loss has a huge impact.
This cycle Chelsea campaigned for her mother in California – the first state where Clinton won the youth vote. The rural congressional district where Chelsea campaigned in Nebraska outperformed others in the state. So far this cycle, Chelsea Clinton has campaigned in at least 15 states.
–CNN’s Jessica Yellin