EXCLUSIVE — Sen. Lisa Murkowski (R-AK) expressed interest in running the Senate health committee chaired by Sen. Bill Cassidy (R-LA) next year, adding to the number of Republicans vying for the post. Cassidy’s loss in his Louisiana primary last month means that Republicans will need to choose another person to serve in his place, and Murkowski’s seniority on the committee puts her in contention for that gavel if the GOP retains its Senate majori…