After Senate Minority Leader Mitch McConnell’s (R-KY) resignation announcement earlier this week, several roles for Republican lawmakers will be up for grabs when he leaves in November. US Senator Joni Ernst (R-IA), who is currently Republican Policy Committee Chair is expected to run for the third ranking position in GOP leadership as Republican Conference Chair, for which US Senator Tom Cotton (R-AR) will also throw his hat in the ring, CNN reports. Per the report, the position Cotton wants is expected to be available because “the current chair of the Republican conference, Sen. John Barrass…