Thousands of Minneapolis-St. Paul nurses from 14 hospitals are voting on whether to strike over a contract dispute centered on staffing levels and their pension plan. The voting by the 12,000 Twin Cities nurses will take place today. The results are expected to be announced shortly after the polls close. The Minnesota Nurses Association has formally recommended a "no" vote on both the pension contract and the labor contracts. A "no" vote is also a vote to strike.