State Auditor Hector Balderas filed his statement of candidacy with the Federal Election Commission last week and is expected to formally announce this week that he is running for Senate, according to a source close to him.
His entrance sets up a competitive Democratic primary with Rep. Martin Heinrich, who announced his candidacy earlier this month.
The Democratic Senatorial Campaign Committee recruited Heinrich to run, and Chairwoman Patty Murray (Wash.) recently offered public praise for the second-term Congressman, but she stopped short of endorsing him.
Democrats hoped to avoid a competitive primary in the race to replace retiring Sen. Jeff Bingaman (D). Republicans are expected to have a competitive primary as well, with former Rep. Heather Wilson already running and Lt. Gov. John Sanchez strongly considering a bid as well.
From left, Lisa Peng, daughter of Peng Ming, Grace Ge Geng, daughter of Gao Zhisheng, and Ti-Anna Wang, daughter of Wang Bingzhang, hold pictures of their imprisoned fathers during a House Subcommittee on Africa, Global Health, Global Human Rights, and International Organizations hearing in the Rayburn House Office Building titled “Their Daughters Appeal to Beijing: ‘Let Our Fathers Go!’”
Each year since 1990, CQ Roll Call has reviewed the financial disclosures of all 541 senators, representatives and delegates to determine the 50 richest members of Congress. This year's report, derived from forms covering the calendar year 2012, shows it took a net worth of $6.67 million to crack the exclusive club.