Democrats had argued that Ms. Stein, the Green Party’s presidential candidate, was ineligible because the party had failed to submit a required statement.

The justices refused to halt a Nevada Supreme Court ruling that had barred the Green Party because it used the wrong form when collecting signatures from voters to qualify for a place on the ballot. The Green Party had argued the ruling by Nevada's top court violated the U.

The Supreme Court’s latest opinion on gun rights has done little so far to eliminate the disagreement and confusion among federal judges who must decide the constitutionality of gun restrictions across the nation,