States should allow online voter registration and create more opportunities to cast ballots before election day, according to a report issued Wednesday by a bipartisan commission formed to address long lines and other troubles at the polls in 2012. The Presidential Commission on Election Administration made its recommendations in a 112-page report to President Obama. The commission — led by longtime Washington attorneys Robert F. Bauer, a Democrat, and Benjamin L. Ginsberg, a Republican — declared that no one should wait more than 30 minutes to vote and warned of an “impending crisis” as electronic voting machines age. Obama created the group last spring after lines, machine malfunctions and confusion left some voters waiting hours. In his inaugural address at the start of his second term, he called for a panel to find ways to improve the “efficient administration” of elections. The commission stayed true to that prescribed mandate, experts said, largely steering clear of the more contentious debates. The report does not wade deeply into issues involving voter fraud or suppression, voter identification laws or protection for minorities after the Supreme Court struck down part of the landmark Voting Rights Act of 1965.