Kansas House Speaker Ray Merrick, a Republican, watches the chamber's electronic tally board as it approves a sweeping anti-abortion bill Friday at the Statehouse in Topeka. At left is Majority Leader Jene Vickrey. John Hanna/AP hide caption

itoggle caption John Hanna/AP

Forty years after Roe v. Wade --€” and nearly 50 years after the start of efforts toward legalizing abortion €-- the debate still carries on, with younger generations ready to take up the cause for both sides. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

People hold pictures of Savita Halappanavar during a vigil outside Belfast City Hall, Northern Ireland, on Thursday. Halappanavar died Oct. 28 in Galway, Ireland, just days after she was denied an abortion. Peter Morrison/AP hide caption

itoggle caption Peter Morrison/AP

Women use wordplay to protest Republican presidential candidate Mitt Romney's position on women's health care outside the Hyatt Regency, where Romney was scheduled to attend a fundraiser, on March 22 in Washington, D.C. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

Mitt Romney's comments on abortion have surprised those on both sides of the issue. Evan Vucci/AP hide caption

itoggle caption Evan Vucci/AP

Mitt Romney proclaimed himself a strong supporter of abortion rights in state campaigns in 1994 and in 2002. Now, he says he opposes almost all abortions. Evan Vucci/AP hide caption

itoggle caption Evan Vucci/AP