Bernie Sanders maintained his qualification as the candidate who can win a general election for the Democratic Party.
In a speech in Springfield, Oregon, Sanders called out his party for its lack of a "50-state strategy" and for failing to present a coherent message regarding "which side they are on."
"The Democratic Party, up to now, has not been clear about which side they are on, on the major issues facing this country," he said, according to ABC News. "You cannot be on the side of those workers who have lost their jobs, because of disastrous trade agreements, and support those corporations who have thrown millions of our workers out on the street."
Sanders pushed for a more progressive agenda on the Democratic side.
“We need to plant the flag of progressive politics in every state in this country," he said at the outdoor rally.
Sanders cited Democratic success on the East and West Coasts, the Midwest and New England, but said that those successes were not enough to push him towards the nomination.
“That's fine, but you can't turn your back on working people and low income people and children and the poor in 25 states in this country. We've got to fight for every one of those states,” he said, CBS News reports.
Previous pushes for a 50-state strategy proved successful, most notably by former DNC chair Howard Dean in 2006.
"A lot of campaigns when they get through the primary and go into the general election nowadays compete in six states, the swing states," Sanders campaign volunteer Nicholas Engel told CBS News. "So if people are only campaigning in the purple states they are only campaigning to those swing state voters and not caring about what the whole country needs."
During his time in Oregon, Sanders criticized the Republican party for its agenda and platforms.
“If you take a hard look at the Republican agenda, it is hard to imagine anybody voting for that agenda,” he said, ABC News reported. “I think we are reaching the day when you are going to have members of Congress with patches on their jackets -- sponsored by the Koch bothers, sponsored by Exxon Mobile.”