WASHINGTON (AP) - Republicans are retaining Senate seats in Tennessee, Mississippi, Maine and Oklahoma. <br />
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Lamar Alexander won a third-term in Tennessee after branding Democrat Gordon Ball as ``one more vote for Barack Obama's agenda.'' In Oklahoma, Republican Sen. Jim Inhofe was re-elected, while Rep. James Lankford won the election to replace Republican Sen. Tom Coburn, who is resigning. <br />
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In Mississippi, Thad Cochran, who endured a tough primary, won re-election. And Susan Collins won a fourth Senate term from Maine. <br />
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Massachusetts Democrat Ed Markey and Democrat Cory Booker in New Jersey each won a first full term after winning special elections last year. <br />
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Earlier, Republicans picked up an additional Senate seat in West Virginia. <br />
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Tennessee voters re-elected Gov. Bill Haslam, while Republican Robert Bentley won a second term as governor of Alabama.
