Michael P. King / Wisconsin State Journal via AP

A snowball fight rages among University of Wisconsin-Madison students on Bascom Hill in Madison, Wis., Dec. 20, 2012.

Michael P. King / AP

A street sign is topped with several inches of snow in Madison, Wis., Dec. 20.

WTMJ-TV reports — The governor of Wisconsin has issued a state of emergency as a winter storm approaches the state. Snow totals of 15 inches or more are possible. “I issued this executive order to make sure Wisconsin is prepared for whatever this winter storm may bring,” Gov. Scott Walker said in a statement. “Mobilizing our state agency resources during this storm will ensure we leave nothing to chance when it comes to protecting the citizens of Wisconsin.” The declaration puts Wisconsin Emergency Management, the Wisconsin National Guard and the State Patrol at the ready for various emergencies.

Read more about the storm here.

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Michael P. King / Wisconsin State Journal via AP

University of Wisconsin-Madison students try to help a food delivery truck driver free his vehicle from snow after it made a stop at Wasabi Japanese Restaurant in Madison, Wis., Dec. 20. They were not successful.

Jeffrey Phelps / EPA

An Amish boy plays in snow outside a one-room schoolhouse in Kingston, Wis., Dec. 20.

Jeffrey Phelps / EPA

Whiteout conditions along a county road near Beaver Dam, Wis., Dec. 20.

John Hart / Wisconsin State Journal via AP

Luke McHenry, left, and his son Sebastian Wells dig out their snow-buried vehicle in Madison, Wis., Dec. 20.

Andy Manis / AP

Julie Wells of United Wisconsin celebrates in the back of a moving van, Jan. 17, 2012, in Madison, Wis., that contains about 1 million signatures to recall Gov. Scott Walker.

Darren Hauck / Reuters

Supporters show up with boxes containing about one million signed recall petitions forms at the General Accounting Board in Madison, Wis. on Tuesday.

WTMJ-TV and JSOnline.com report that Groups seeking to recall Gov. Scott Walker submitted nearly twice as many signatures Tuesday as required to force an election, an overwhelming number that may make an election later this year inevitable. But Walker's opponents still must transform public outrage over his pushback against unions into actual votes to oust him from office.

If the governor is worried, he's not showing it: As petitions were delivered to election officials, he was out of state raising money to defend himself and the agenda that has made him a national conservative hero.

We’ve been covering the situation in Wisconsin for quite some time in PhotoBlog.

• Protesters pack the Wisconsin State Capitol in opposition to the elimination of collective bargaining for state workers
• Man stands on ledge at Wisconsin Capitol amid ongoing protest
• Wisconsin representatives set up desks outside Capitol
• Raucous crowds: Police remove protesters from Wis. Capitol
• Protesters spell out their grievances at the Wisconsin State Capitol
• After 40 hours of exhausting debate, Wisconsin representatives strike a deal