Arnold Schwarzenegger says he won't run for another office in 2010, ending (for now) speculation that he would launch a bid for the U.S. Senate. It's worth noting that "Governator" has a nice ring to it, and there's no comparable Terminator nickname for senators.
Sen. Barbara Boxer (D-CA) led Schwarzenegger in a test ballot poll from Rasmussen this month, 50% to 34%, with former John McCain economic adviser and HP CEO Carly Fiorina performing better (38% to Boxer's 47%) in a potential matchup against the incumbent.
and after his disastrous turn at governing he's not very popular in california and not likely to win a senate seat anyway....
with numbers like those he can make a run at GW Bush and Dick Cheney for least popular republican these days.
how about "the tersenator"? with him being all terse, it'd be a triple fit;)