Wisconsin Gov. Scott Walker, a failed GOP presidential contender, has endorsed Ted Cruz just days ahead of the crucial primary in his state.

"It was an easy call for me to support Ted Cruz," Gov. Walker said in a radio interview Tuesday morning.

Walker insisted his endorsement was not just an anti-Trump move, but he sincerely likes the Texas senator

the media doesn't give him all the benefit of what if have found personally

"He is a decent man," Walker said of Cruz.

After the failed Obama-Clinton Admin, Americans want leadership. I endorse @TedCruz, a principled constitutional conservative who can win.

-- Scott Walker (@ScottWalker) March 29, 2016

Polls show Trump and Cruz in a close race for Wisconsin delegates. The state is seen as an important primary in the efforts to slow Trump's march to the Republican nomination.