Maryann Tobin

The shine on Sarah Palin's star appears to be fading. Does this mean that the politician turned celebrity author is losing her voice as a champion of a fading conservative movement?

Three networks have rejected a pitch by Sarah Palin for a new show featuring her husband Todd and his snowmobile adventures.

"TLC owner Discovery Communications has passed, say sources. And A&E Networks, which entered into a bidding war with Discovery for Sarah Palin's Alaska, also is not interested," according to the Hollywood Reporter.

Palin has been in the limelight since rocking the GOP stage in 2008 as John McCain's running mate against Barack Obama in the race for the presidency.

While the McCain-Palin ticket failed to capture enough votes to take the While House, Palin used her newfound celebrity to make money with a multi-million dollar book deal on "Going Rogue," a TV show called "Sarah Palin's Alaska," and a stint on Fox News.

However, no matter how much shock and awe rhetoric Palin has tried to interject into the 2012 presidential race, the media has turned their sights away from the former beauty queen and taken a piece of Palin's celebrity with it.

Perhaps Palin's brand of conservatism is no longer striking a chord with the fringe, and the Tea Party is on its way out. Since taking more than 60 seats in 2010 and giving the GOP a majority in the House, Congress has earned one of the worst approval ratings in history.

The Sarah Palin wave may also be sinking because of a loss of credibility. Many of Palin's fiery claims have proven to be false. The most well known may be Palin's insistence during the 2009 health care reform debate, that the Obama Administration legislation included "death panels," as a form of rationing. Facts in the New York Times revealed nothing could be further from the truth.

The rise and fall of the Sarah Palin star may be a sign of the times. With so many of the country's problems unresolved under the Republican rule in congress, what sounded like a good idea three years ago has not turned out to be what many voters expected when they gave the nod to the Tea Party.

Why watch a TV show about the husband of a woman who personifies a tarnished political platform?

When all is said and done, Sarah Palin's best claim to fame may be the Tina Fey portrayal of her on Saturday Night Live. If Fey revived the character, Palin might have a better chance of selling her new TV show. SNL may not carry the weight of polling data, but it does fire up a news cycle for politicians if they are worthy of the attention.

For diehard Palin fans, there will always be her books and YouTube. For the rest, Palin may just be another celebrity the public has lost interest in.