In a development that immediately reverberated through political circles, Maine Gov. Janet Mills ended her Senate bid this morning, less than six weeks before the primary. Rumors of a suspension had circulated for weeks. Mills had been absent from television for nearly a month, constrained by a lack of resources to compete with upstart oyster farmer Graham Platner—a challenge she acknowledged bluntly in her statement. “I very simply do not have the one thing that political campaigns unfortunately require today: the financial resources,” she wrote, a dig aimed at Senate Democratic Leader Chuck Schumer, who had pressed her to run but hadn’t committed support to her primary effort. According to a Republican source, internal G.O.P. polling last week showed Platner defeating Mills by an insurmountable 36 points.