The Times on exit polls in today's primaries and caucuses: Electability remains a top priority for many voters, according to early results of exit polls conducted in Arizona, Missouri, Oklahoma and South Carolina by Edison Media Research and Mitofsky International for the major television networks and The Associated Press. About 2 in 10 of the voters in South Carolina, Oklahoma, Arizona and Missouri said a candidate's ability to defeat President Bush mattered most in their primary vote decision. According to the exit polls, the economy was the issue on the minds of most voters heading to the polls today. More than three-quarters of voters said they did not consider the economy to be in good condition. In South Carolina, about 45 percent of voters polled said the economy was the top issue affecting their vote today, followed by 20 percent whose chief concern was health care and 10 percent for whom the war was the most important problem. Both the economy and health care were the main concerns among voters in Missouri and Oklahoma...While the economy was the top concern of about 1 in 3 voters in Arizona, the war shared second place with health care. There was a question about Kerry on there too, but it wasn't whether he "lacked the temperment to be President": Among those who did not vote for John Kerry today, most said they would be satisfied if he became the eventual nominee.