People hold signs, including some reading "America is ready for marriage," at a same-sex marriage victory celebration on Oct. 6 in Salt Lake City, Utah. America may be ready, but Republicans aren't: Rising popular support for same-sex marriage is posing a problem for the GOP. George Frey/Getty Images hide caption

itoggle caption George Frey/Getty Images

Political signs separate Sen. Mitch McConnell's and Alison Lundergan Grimes' camps at the annual Fancy Farm picnic in Kentucky in August. Stephen Lance Dennee/AP hide caption

itoggle caption Stephen Lance Dennee/AP

Senate Minority Leader Republican Mitch McConnell has reportedly been talking privately about what he'd do as majority leader. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

During a speech at the American Legion's National Convention on Tuesday, President Obama again called the extremist group the Islamic State a "cancer." Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Former Secretary of State Hillary Clinton speaks to a crowd during a book signing for her new book, Hard Choices. Clinton's book tour has brought her before admiring audiences, but also highlighted her difficulty talking about her wealth and her presidential vision. Andrew Burton/Getty Images hide caption

itoggle caption Andrew Burton/Getty Images

An official assists a voter at a polling station inside Fort Garrison Elementary School in Pikesville, Md., on primary day, June 24. As in many states this primary election season, turnout was low in Maryland. Patrick Semansky/AP hide caption

itoggle caption Patrick Semansky/AP