7. Nevada Supreme Court justices heard arguments Tuesday on the upcoming special election to fill Republican Sen. Dean Heller's old House seat. They gave no indication as to how they might rule on letting the parties pick the candidate versus the "ballot royale" free-for-all election. 6. Weston Wamp, son of former Republican congressman and gubernatorial candidate Zach Wamp, is exploring a run for his father's former House seat, multiple sources tell the Nashville Post. The seat, Tennessee's 3rd district, is currently held by freshman Rep. Chuck Fleischmann, R-Tenn. 5. New Mexico blogger Joe Monahan reports that former New Mexico Lieutenant Gov. Diane Denish won't join the race for Rep. Martin Heinrich's, D-N.M., House seat. Meanwhile, former Albuquerque Mayor Martin Chavez (D) made his bid for the seat official via a web video. "It really is about the economy and how perilous it is," said Chavez. "And you can't have a strong economy unless you balance the budget." He also said he would work to balance the budget while supporting Medicare and Social Security to protect society's "most vulnerable." Chavez, known as a centrist from his time as mayor of Albuquerque, will face state senator Eric Griego in a Democratic primary that will pit the party's moderate and liberal wings against each other. 4. Another endorsement for Ohio Treasurer Josh Mandel: on, Tuesday, the fiscally conservative Club for Growth announced their support for him in the Ohio Senate race. 3. Former Massachusetts Gov. Mitt Romney is maintaining his lead in a new Suffolk University/WHDH-TV poll of the New Hampshire Republican presidential primary, but Rep. Michele Bachmann, R-Minn., has vaulted into second place. Romney leads Bachmann, 36 percent to 11 percent, with all other candidates earning single-digit support. Notably, Pawlenty remained well behind, only recording two percent of the vote. 2. President Obama will hold a press conference at 11:30 am from the East Room, the White House announced Tuesday evening. Obama is likely to talk about the ongoing deficit-reduction and debt-ceiling negotiations and face questions on the economy, Libya, Afghanistan, and his reelection campaign. 1. Democratic super PAC Priorities USA is going on the air in five battleground states with an ad responding to GOP criticisms of Obama's record.. Bill Burton of Priorities USA Action said the ad campaign is a response to one launched last week by the conservative group, Crossroads GPS, but acknowledged the ad buy is smaller: about $750,000 worth as opposed to the $5 million Crossroads says it is spending in the first stage of a $20 million campaign. The ad will run in Virginia, North Carolina, Florida, Iowa and Colorado. -- Steven Shepard contributed to this report.