MADISON, Wis. (AP) -- Milwaukee Mayor Tom Barrett is discounting Scott Walker's claims that he can create 250,000 jobs within four years if elected governor.

The Democratic gubernatorial candidate said during a campaign tour of Madison businesses on Tuesday that the Republican Walker picked an arbitrary number for the sake of a campaign statement.

At the same time, Barrett says it's reasonable to expect the state can add 180,000 jobs over the next three years. To do that, Barrett says Wisconsin must accept $810 million in federal stimulus money to build a high-speed rail line between Madison and Milwaukee.

Walker, who is Milwaukee County executive, has spoken out against the rail line saying it will cost taxpayers too much in ongoing costs and not create enough jobs.