The National Republican Senatorial Committee is rescheduling when it plans to run TV ads in support of Wisconsin Sen. Ron Johnson, pushing back its reservation from August and September to the last three weeks of the race. The news comes hours before the Wisconsin lawmaker plans to speak at the Republican National Convention. Johnson is locked in a tough fight against former Democratic Sen. Russ Feingold in a race Senate Democrats consider one of their two best pickup opportunities this year. [ Johnson Raises $2.1 Million, Sees Post-Primary Momentum ] An official at the NRSC confirmed that their ad buy had been delayed but said it did not represent a finished commitment to Johnson's campaign. "Our investment in Wisconsin is not changing, just the timing," NRSC spokeswoman Andrea Bozek said. [ What's a Vulnerable Republican To Do? ] Republican strategists have wondered whether Johnson, who spent $9 million of his own money on his 2010 campaign, would invest again in his re-election race . That hasn't stopped some GOP-aligned outside groups from running ads in Wisconsin, however, including the Chamber of Commerce. Get breaking news alerts and more from Roll Call on your iPhone or your Android.
