Bush can take his job with him
Dole recognized that he couldn't meet his Senate responsibilities and run for president at the same time. In that light, his resignation was both classy and proper.
Air Force 1 has a very capable communication suite. Bush can do just about anything from it. On the other hand, Kerry has missed about 90% of all Senate votes this year while drawing his full paycheck. Sounds like the Mass. residents aren't getting the representation they're paying for (taxation without representation!).