The number of positions potentially changing hands depends on which of those posts open up after the shuffling among current leadership members settles.

The retirement of House Speaker John Boehner (R-Ohio) could result in a domino effect among the House Republican leadership with four of the five positions potentially changing hands. This depends on which of those posts open up after the shuffling among current leadership members settles.Below is our latest rundown on the Republican leadership races:SpeakerAs we previously reported (see Ag Perspectives, 25 September 2015), current Majority Leader Kevin McCarthy is likely to become speaker after officially announcing his candidacy yesterday. He was the chief Republican candidate recruitm...