Women make up half of all Virginia voters , so it 's a good bet they will determine who wins the race between two candidates who '' exude machismo , '' as The Washington Post put it : '' James Webb , the marine firing his M50 antitank rifles in the jungles of Vietnam , and George Allen , the tobacco-chewing cowboy who as governor once stirred G.O.P . delegates with this line about Democrats : ` Let 's enjoy knocking their soft teeth down their whining throats . ' ''