Besides knowing the candidates Tuesday, the Metz family of Lenexa checked off another important piece of preparation -- making sure everyone had photo ID before going to the polls.

Tuesday's primary election in Kansas is the first major test of the state's requirement that all voters show government-issued photo identification.

Missouri does not require photo identification. Throughout the area, voter turnout was low, as expected, and generated few problems.

As the Metzes left for their polling place at the Central Church of the Nazarene in Lenexa, Marty and Kristin Metz made sure that they and their daughter Joy Metz carried ID.

"I thought it went well," Marty Metz said. "It was really smooth. Easy."

Secretary of State Kris Kobach, who was touring polling places in Wyandotte, Johnson and Shawnee counties, said the new photo ID requirement was going well.

"We have had good reaction all over the state," said Kobach, who was at the same polling place where the Metz family was voting.

He said no notable problems had turned up.

"Every once in a while you hear about someone who grumbles and doesn't want to show his photo ID," Kobach said.

Kobach said he was expecting voter turnout to be about 18 percent statewide.

Bob Zurcher, supervising judge at the polling location at the Central Church of the Nazarene, said turnout was better than he expected.

"I thought the turnout was going to be very slow, making it a very long day," he said.

Instead, people trickled in at a steady pace.

In Kansas City, election board director Shelley McThomas said voter turnout Tuesday was "slow and low."

"It is following a pattern of August presidential year turnout, they have been low here," she said.

Several precincts in Kansas City reported problems with touch screens. When voters pressed a button to increase the text size, a portion of the wording on the amendments was not visible. McThomas said signs were put up alerting voters not to change the text size.

One voter, John Adams, experienced the touch-screen problem at his south Kansas City polling place and it took about 20 minutes to resolve the problem, he said.

He said he hopes the problem doesn't repeat itself in November.

Clay County also experienced a low voter turnout. Election officials were expecting a 15 percent turnout, which was slightly lower than the 18 percent turnout in November 2010, said Dave Reinhart, the Republican director.

Platte County had a 19 percent turnout.