Sen. Hillary Rodham Clinton (D-N.Y.) is back in the Senate Tuesday. Clinton will attend votes and the Senate Democrats caucus lunch, her office says.

This is Clinton's first appearance back in the Senate after ending her presidential bid and endorsing Barack ObamaBarack Hussein ObamaReport: FCC chair to push for complete repeal of net neutrality Right way and wrong way Keystone XL pipeline clears major hurdle despite recent leak MORE. Clinton will make her first joint campaign appearance with Obama Friday in Unity, New Hampshire.