This kind of voting allows a senator to cast a vote in committee for an absent senator
.... committee may not permit a proxy vote to be cast unless the absent 
Senator has ... 15 The rule allows Senate committees to set lower ... member of 
the committee to see what kind of issues may come up at the... [DOC] [TLE] Marco Rubio 2016 candidate, absentee senator - POLITICO [PAR] Jul 27, 2015 ... At last week's Senate Foreign Relations Committee hearing, Marco Rubio ... field, 
Rubio has been absent more often than other senators seeking the White House.