How many campaign promises has Scott Walker broken?

At least one, as noted by capper over at Cognitive Dissidence. One of Walker’s
campaign promises included opposition to development on the County Grounds:

Oppose development of northeast quadrant of County Grounds for anything other than state forest.

Seems pretty cut and dry, doesn’t it? There’s not much wiggle room in a promise like that, so I’m wondering how Scott Walker can explain breaking that promise to allow UWM to purchase the land for UWM’s new School of Engineering:

One of the first steps is with the County Board Economic & Community Development Standing Committee, which has on its Monday, June 11, agenda, “discussions with the University of Wisconsin-Milwaukee, or its designee, regarding their interest in a portion of the Northeast Quadrant of the County Grounds in the City of Wauwatosa for the development of a school of engineering, and biomedical and advanced automation research and teaching campus.”

I know politicians will say almost anything to get elected, but if why should anyone vote to elect Scott Walker governor of the State of Wisconsin if he’s already demonstrated he can’t keep the promises he makes to voters? What’s more, if Scott Walker broke his promise on an issue like the development of the County Grounds, then how many other promises has he broken while he thought no one was looking?

H/T to capper.