Abortion rights have suddenly emerged as an issue that could reshape the battle between Democrats and Republicans for control of Congress, following a report that conservatives on the U.S. Supreme Court are poised to strike down the half century-old Roe v. Wade precedent.

Politico reported Monday night that it had obtained the initial draft majority opinion, signed by Justice Samuel Alito, that overturns the landmark 1973 Roe ruling that made the choice to seek an abortion a constitutional right for women nationwide. Such a decision would hand Republicans a long-sought victory yet could galvanize Democrats who’ve been bracing for the prospect of losing their House and Senate majorities this November.

"This decision will put women’s rights and abortion rights front and center in the elections,” said Geoff Garin, a pollster who advises Senate Democrats. "Up until now, many voters did not take the threat to legal abortion seriously or believe that Roe would be overturned, but now the reality of that threat will be crystal clear.”