A bill to approve construction of the Keystone XL pipeline failed a vote in the Senate on Tuesday, dooming prospects for such legislation this year. A total of 59 senators voted for the measure, and 41 voted against it. Under the terms of an agreement struck by senators to vote on the bill, 60 "yes" votes were required for the measure to pass. Sen. Mary Landrieu, a Louisiana Democrat, had pushed for the vote to boost her chances in her Dec. 6 runoff election with Rep. Bill Cassidy.
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