Senate Majority PAC is delaying by two weeks a planned TV ad campaign in support of Ted Strickland, the Ohio Senate Democratic nominee whose campaign has unexpectedly struggled to gain traction against Republican Sen. Rob Portman. 

The news, confirmed by two sources tracking ad buys, comes on the heels of a decision from the independent expenditure arm of the Democratic Senatorial Campaign Committee to delay by one week its own ad buy. 

The former governor has struggled to raise money against the well-funded Portman, and polls show him lagging badly against the Republican incumbent. 

The Rothenberg & Gonzales Political Report/Roll Call rates the race Tilts Republican.