Alaska Gov. Sean Parnell was supposed to be cruising to re-election, but he's now in a serious contest against a non-partisan ticket. Mark Thiessen/AP hide caption

itoggle caption Mark Thiessen/AP

This fan at the base of the lectern for Democratic gubernatorial candidate Charlie Crist Wednesday delayed the gubernatorial debate between Crist and Governor Rick Scott. The Scott campaign believed the fan violated the debate rules. CBS 4 Pool/AP hide caption

itoggle caption CBS 4 Pool/AP

Navajo presidential candidate Chris Deschene greets supporters ahead of a hearing in Window Rock, Ariz., to determine whether Deschene is fluent enough in Navajo to qualify for the presidency. Felicia Fonseca/AP hide caption

itoggle caption Felicia Fonseca/AP

Democratic candidate Rick Weiland, a businessman, plays at a union hall in Sioux Falls, S.D. "We've tried to make this campaign fun," he told the crowd. "We're enjoying it. I hope you are." Don Gonyea/NPR hide caption

itoggle caption Don Gonyea/NPR

During a news conference on Sunday, Texas Health Presbyterian Hospital Chief Clinical Officer Dr. Daniel Varga answers questions about a health care worker who now has Ebola after providing care for Thomas Eric Duncan. Varga is expected to testify before a House panel looking into Ebola response. Brandon Wade/AP hide caption

itoggle caption Brandon Wade/AP

Ebola is the latest issue to spill into debates this season. Colorado Sen. Mark Udall (left) has blamed Republicans for cutting government health resources. His opponent, Rep. Cory Gardner, says the CDC has been spending wastefully. Brennan Linsley/AP hide caption

itoggle caption Brennan Linsley/AP

Clay Aiken hugs a supporter during an election night watch party May 6 in Holly Springs, N.C. Aiken went on to win the primary by fewer than 400 votes. Gerry Broome/AP hide caption

itoggle caption Gerry Broome/AP

Sen. Mary Landrieu greets candidates Rep. Bill Cassidy (left) and Rob Maness after Tuesday's debate. Most observers don't see how Landrieu can pull enough support to avoid a runoff in the state's open primary. Gerald Herbert/AP hide caption

itoggle caption Gerald Herbert/AP