Obama has the advantage in Michigan, according to a new CNN poll of polls.

(CNN) – An average of the latest polls in Michigan shows why the state continues to be a battleground in the fight for the presidency.

A new CNN poll of polls in Michigan, compiled Saturday, suggests Senator Barack Obama has a five point lead over Senator John McCain, 47 percent to 42 percent, with 11 percent of voters undecided.

Seventeen electoral votes are up for grabs in Michigan.

It seems the current financial crisis from Wall Street to Main Street will be a major factor in Michigan.

"The struggling economy could be Obama's trump card," noted CNN Senior Political Researcher Alan Silverleib. "Obama is doing slightly better in our Michigan poll of polls than in our national poll of polls in large part because Michigan is ground zero when it comes to the country's current economic hardship. The unsettling news from Wall Street over the last few days should play to Obama's advantage, especially in the Rust Belt."

Michigan's voted for the Democratic candidate in the last four presidential elections, but it was quite close last time around, with Senator John Kerry beating President Bush there by just three points.

The latest CNN poll of polls is an average of the three most recent surveys in Michigan. They are a Big Ten Batttleground poll conducted September 14-17, an EPIC/MRA survey taken on the same days, and a Marist poll conducted September 16-17.

UPDATE: The release of new ARG numbers this afternoon has tightened up the Michigan average by one point. Obama now leads McCain in the Michigan poll of polls by 4 points (47 to 43 percent). This morning's Michigan poll of polls showed Obama leading McCain by 5 points (47 to 42 percent).