Freshman lawmakers rarely influence outcomes in the Senate. Elizabeth Warren may be an exception if President Barack Obama nominates Larry Summers to be the next chairman of the Federal Reserve.
If the freshman senator -- the populist scourge of Wall Street -- supports her former Harvard University colleague, he probably would draw little opposition from Democrats and would likely muster enough Republican votes to win confirmation. If she opposes him, other Democrats may defect, too, and it might be a struggle to win over enough Republicans to get the 60 votes required.