CNN

(CNN)– Weeks after Todd Palin hit the campaign trail solo in Maine, stumping for the Republican presidential ticket, the husband of Republican vice presidential candidate Sarah Palin, is being featured in a campaign mailing there.

In the mailing, paid for and authorized by Maine’s Republican Party, Alaska's First Dude — a four-time Iron Dog Snowmobile Champion — tells rural voters Democratic presidential candidate Barack Obama's "extreme environmental policies" could have a major impact on snowmobilers.

"Could this be the last winter to ride in our National Parks? This election will decide," the ad warns.

The mailing also hits the Sierra Club, an endorser of the Illinois senator, for its position against snowmobiles in national parks. The environmental organization argues snowmobiles are "loud and obnoxious" and pollute the environment.

"John McCain and Sarah Palin have long been advocates to protect our environment with practical standards—allowing Americans to continue enjoying outdoor recreational activities," the flier declares.

If the Republicans win the presiential race, "Snowmobiles will have a strong voice in the White House," says the mailing.