Montana's Senate candidates focused Monday on rallying supporters to get out the vote in a race still too close to call.
Republican Sen. Conrad Burns told supporters in Butte, Bozeman and Billings that turnout of party faithful would be the key if he is to be elected to a fourth term.
"This is going to be a very close election," he said. "And in close elections like this, turnout makes the difference."
Recent polls have shown Burns trailing or running even with Democrat Jon Tester, an organic farmer who has criticized Burns for ties to disgraced lobbyist Jack Abramoff.
Burns campaigned with Republican Rep. Denny Rehberg and Republican Sen. Pat Roberts of Kansas on Monday.
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Tester campaigned with Democratic Sen. Max Baucus and Democratic Gov. Brian Schweitzer in Hamilton, Missoula, Billings and Great Falls.
"We are seeing excitement in numbers like Democrats have not ever seen in this state before," Tester spokesman Matt McKenna said.