- Associated Press - Wednesday, August 13, 2014

JUNEAU, Alaska (AP) - Republican U.S. Senate hopeful Mead Treadwell has gotten the endorsement of an Iditarod racing legend.

In a video released by the campaign, full of images of tumbling, playing puppies, Martin Buser says he knows how to pick a good lead dog.

Treadwell is one of the three major GOP candidates vying for that party’s nomination for the seat held by Democrat Mark Begich, who is seeking re-election. The primary is Tuesday.

Republican rival Dan Sullivan has had prominent individuals appear in ads on his behalf, including former Secretary of State Condoleezza Rice and retired Air Force General Joe Ralston.

Tea party favorite Joe Miller is also running; he has highlighted support from Maricopa County, Arizona, Sheriff Joe Arpaio, an immigration hard-liner.

Treadwell’s pre-primary financial disclosure showed he brought in about $92,000 from between July 1 and July 30, including a roughly $8,000 loan. He ended the period with about $140,000 available and $260,000 in debts, mostly from money he lent the campaign.

Sullivan ended the period with nearly $1 million available, while Miller reported having about $190,000.

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To see video: http://bit.ly/1BeGjXS