this isn't rocket science(Он выиграет выборы-это ежу понятно. He'll get elected-it's a no-brainer.; о чём-либо очевидном, простом said of something obvious and easy to understand)
don't need much brains to figure it out("He was a thief. He was ripping somebody off." "You sure?" I said. "It don't need much brains to figure it out," she said. (Lee Child) 4uzhoj)
this isn't rocket science(Он выиграет выборы-это ежу понятно. He'll get elected-it's a no-brainer.; о чём-либо очевидном, простом said of something obvious and easy to understand)