MANASSAS, Va. (WUSA) - Day Four of our Battleground Virginia tour brings our crew closer to home, to one of the most hotly contested counties in the Commonwealth.

Prince William County has a complex, diverse population marked by tremendous growth over the last decade.

Not since the Battle of Bull Run has there been seen such a focused fight. We know Prince William County is a critical battleground and to punctuate its importance, both presidential candidates will be here within the next few days to rally their troops.

The battle lines are drawn. Every foot soldier deployed, in a ground war so intense, history is being made yet again, in Virginia.

"I'm going to rally among my family, my children, my friends to go to vote for President Obama," said Aminata Conteh, an Obama supporter)

Conteh, an immigrant from Sierra Leone, is passionate about President Obama, and eager for election day, which falls on her 47th birthday.

"I wish on that day I'll be jumping up and down for jooooyyy! Seriously, I am praying so hard for him to win because he's a good man, he has a good heart, he's for the people," Conteh said.

Lucy Paschalides is just as ardent, but about Governor Romney.

"We need some changes. He said he was going to do some changes, President Obama, but he hasn't done very much. And I think Romney is the guy who can turn it around. There's no question in my mind," said Paschalides, a Romney supporter.

Both women plan to attend upcoming campaign events. Mr. Obama will appear with former President Clinton on Monday.

"President Clinton is just a carbon copy of President Obama. People say President Clinton is the first black president and I love both of them," Conteh said.

Governor Romney will be at a rally in Haymarket this weekend.

"I can hardly wait till Sunday!" said Paschalides.

Twenty percent of Prince William County residents are Hispanic, but the area is a study in contrasts. The east side, heavily populated with new immigrants. The west side has seen dramatic growth in upper middle income families.

"Regardless of the influx of money, regardless of the advanced technological aspects of the campaign, the micro-targeting of very slim constituencies, we're still seeing a lot of the remnants of campaigns from bygone eras. Can you get your base fired up? Can you get people turned out to vote?" said Rosalyn Cooperman of the University of Mary Washington.

Twelve days until election day, and the campaigns are fighting for every vote.

Here in Prince William County, voter turnout will be critical. Historically, women voters turn out in higher numbers than their male counterparts. We'll take a look at the importance of their vote as we travel to another local battleground: Loudoun County.

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