Some voters are a lot more complicated than is commonly understood, a new Pew Research Center study suggests. In Denver, an election worker collects a mail-in ballot from a voter on Tuesday. Ed Andrieski/AP hide caption

itoggle caption Ed Andrieski/AP

Catching up with a national trend, more Hispanics say they are not affiliated with a particular religion — a shift that could make the gap between Latinos and Republicans even wider. iStockphoto hide caption

itoggle caption iStockphoto

Volunteer Tom Strain carries debris from an empty lot as part of an Earth Day cleanup effort in Camden, N.J. The Earth Day events celebrated on April 22 promote a sustainable and clean environment. Mel Evans/AP hide caption

itoggle caption Mel Evans/AP

President Obama, pictured here with Lilly Ledbetter, and congressional Democrats are working the equal pay issue hard in a midterm election year when they will need as many women to vote as possible. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP

Hilary Clinton at last week's Clinton Global Initiative forum in in New York City. /PA Photos/Landov hide caption

itoggle caption /PA Photos/Landov

Rep. Justin Amash of Michigan, a libertarian Republican, says recent surveillance leaks have "brought home" libertarian ideas. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

During the 2012 campaign cycle, CNN was among several news networks that hosted Republican debates. Now, the GOP says it doesn't want to be on either that network or NBC. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images

Sen. Jim DeMint, R-S.C., speaks during to the Conservative Political Action Conference in Washington, D.C., on Feb. 9. Mandel Ngan/AFP/Getty Images hide caption

itoggle caption Mandel Ngan/AFP/Getty Images

Sen. Jon Tester, D-Mont., receives a kiss from his grandson Wednesday in Great Falls, Mont. Tester won re-election in a tight contest with Republican Rep. Denny Rehberg. Michael Albans/AP hide caption

itoggle caption Michael Albans/AP

Annual "Biketoberfest" participants ride along Beach Street in downtown Daytona Beach, Fla., in 2010. Daytona Beach Visitors Bureau hide caption

itoggle caption Daytona Beach Visitors Bureau