SOMERVILLE, Mass. -- On a cold, drizzly Sunday morning here, Elizabeth Warren tells a few dozen supporters who have gathered to canvass the neighborhood on her behalf that her U.S. Senate race against Republican incumbent Scott Brown is about "whose side do you stand on" and "whether or not the government in Washington belongs to us."
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33 out of 100 seats are up for election. 51 are needed for a majority.
|Seats gained or lost||+2||-2|
* Includes two independent senators expected to caucus with the Democrats: Angus King (Maine) and Sen. Bernie Sanders (Vt.).
All 435 seats are up for election. 218 are needed for a majority.