A federal judge refused on Monday to interfere with a new Minnesota law that revealed political donations from Target Corp. and other companies, saying the public has an interest in knowing who speaks and who pays for those messages as the election approaches.

U.S. District Judge Donovan Frank for the District of Minnesota denied a temporary injunction in a lawsuit brought by supporters of Republican gubernatorial candidate Tom Emmer, including an anti-abortion group and an anti-tax organization. They sued to overturn the law on free speech grounds and had asked Frank to suspend the disclosure requirements immediately.