President Obama cleared a significant political hurdle Tuesday when several undecided Democrats came out in favor of the Iran nuclear deal, giving him enough votes to block a Senate resolution of disapproval. Sen. Maria Cantwell Maria Elaine CantwellPrivacy legislation could provide common ground for the newly divided Congress Dems slam Trump’s energy regulator nominee Cantwell easily wins reelection in Washington Senate race MORE (Wash.), the last undecided Senate Democrat, announced her support for the measure late Tuesday, becoming the 42nd vote against the resolution of disapproval. All Senate Democrats have now announced where they stand on the deal. He argued the deal should get an up-or-down vote, warning Democrats against hiding behind a filibuster, which would require 60 votes to overcome. The Senate would need 60 votes to advance a measure rejecting the deal for a floor vote. The four new Democrats' support came as another member of the party announced his opposition to the Iran deal on Tuesday. West Virginia Sen. Joe Manchin made a total of four Democrats who came out against the deal. Connecticut Sen. Richard Blumenthal, Michigan Sen. Gary Peters and Oregon Sen. Ron Wyden on Tuesday all announced in rapid fire succession they would support the deal, putting Obama at 41 votes of support in the Senate. Roskam, who serves as co-chair of the House Republican Israel Caucus, wants to force a floor vote this week that would cancel the House vote on the deal unless the White House releases the text of the “side deals” between Iran and the International Atomic Energy Agency regarding nuclear inspections. The votes on the Iran deal followed an intense month of lobbying in August. “I have met with representatives for each of our negotiating partners, whom have all stated that they will not return to the negotiating table if Congress rejects this deal.” 
 
 Cristina Marcos contributed.
– The Iran nuclear deal appears good to go following announcements of support from three Democratic senators today in what the Hill is calling an "impressive lobbying win" for President Obama and the White House. Those three senators bring the total votes for the deal to 41 in the Senate, meaning Republicans don't have the numbers to pass a resolution against it. All 54 Senate Republicans were joined by four Democrats—including a West Virginia senator who officially sided with them today—in supporting a resolution to stop the deal, CNN reports. It would have likely been a moot point, anyway, as Obama already had the votes to veto any resolution passed against his deal. Floor debate on the deal begins today. While today's announcements were supportive, they weren't necessarily ringing endorsements of Obama's plan. “Despite my serious concerns with this agreement, I have unfortunately become convinced that we are faced with no viable alternative,” one of the three senators, Gary Peters of Michigan, tells the Hill. "While this is not the agreement I would have accepted at the negotiating table, it is better than no deal at all," another of the senators, Richard Blumenthal of Connecticut, tells CNN. The three senators made their announcements on the same day Dick Cheney called the Iran nuclear deal "madness." Ted Cruz and Donald Trump are expected to headline a rally against it tomorrow.