Los Angeles TimesIllinois Romney camp lets inadequate Santorum petitions slideChicago Daily HeraldAP AP By Kerry Lester With the Illinois presidential primary expected to be a tight race, former Massachusetts Gov. Mitt Romney and his backers are expected to spend millions on TV ads and other campaign costs by Tuesday's election.Illinois primary could help Romney stake his claimWashington PostMitt Romney already spending big ahead of Illinois primaryLos Angeles TimesRomney to saturate Illinois airwaves ahead of primaryChicago TribuneThe Republic -Daily Beast -ABC News (blog)all 68 news articles »