The Republican Governors Association is out with its first ad supporting Gov. Scott Walker (R) in Wisconsin’s likely recall election.

The clever ad uses an elevator to attack two leading Democratic rivals to Walker, Milwaulkee Mayor Tom Barrett and former Dane County executive Kathleen Falk, as tax-raising job killers. (Barrett, who lost to Walker in 2010, has yet to decide on a bid.)

It echoes spots aired by the RGA in 2010 against Barrett, when the committee spent over $5 million to help Walker win office. The RGA is likely to once again be a major player here as Democrats attempt to unseat Walker over his elimination of collective bargaining rights for public employees.

Recall primaries will likely be held on May 8, with the general election on June 5. Four Republican state senators and Lt. Gov. Rebecca Kleefisch are also facing recall votes.

Democrats ran their first recall campaign ad in late February, highlighting an investigation involving Walker aides. Walker has been on the air since last fall. A recent survey from the Democratic-leaning Public Policy Polling found a dead heat.