to sail to victory, be the tea party's best hope of bringing down an incumbent in the gop. but now his campaign is wrapped up in a downright bizarre scandal. dana bash is "outfront" with the story. >> reporter: a conservative blogger is in jail, arrested for breaking into this mississippi nursing home to photograph u.s. senatored that cochran's ailing wife, suffering from dementia. >> it's the worst. >> reporter: in gnaw ad, cochran's campaign points fingers at his gop challenger, chris mcdaniel. >> posting video of senatored that cochran's wife in a nursing home? had enough? >> reporter: and it gets even deeper in the mississippi mud. cochran supporters argue the reason the blogger took his wife's picture was to feed questions about cochrane and long-time aide kay webber, who has traveled extensively with the senator on the taxpayer dime. cochran calls it part of her job and suggestions of anything untoward sexist.