Democratic front-runner Hillary Clinton won four out of the five northeastern states adding pressure on her rival Bernie Sanders to quit or ease criticism of her. In her victory speech the former secretary of state spoke of the need for unity.

“Whether you support Senator Sanders or you support me, there’s much more that unites us than divides us,” Hillary said during a speech while on the campaign trail in Philadelphia.

Although pundits see Sanders as having no possible path to victory, he’s not showing any signs of leaving the race after taking the surprise win of Rhode Island.