Behind every significant change in American history -- There lies a great debate. Freedom of speech entitles all Americans to stand up for what they believe in. There are two sides to every coin, and a true debate will bring forth fair and balanced facts. So stay with the # 1 nightly debate program on cable news because -- We Debate. You Decide.

Tonight on "Hannity & Colmes" ...

• Despite pleas of Democrats, longtime friends and former supporters -- Ralph Nader (search) officially enters the presidential race as an independent. Will the other White House hopefuls roll out the 'welcome' mat?

Ronnie Dugger of Alliance For Democracy weighs in.

• President Bush (search ) tells the nation's governors that the rising political tensions of an election year won't stop him from working closely with them. Did they read him loud and clear? We'll ask Mississippi Governor Haley Barbour.

• The Bush-Cheney campaign believes the math favors Kerry as the likely nominee to go head-to-head with Bush in November. And campaign officials say the president "won't wait for the fat lady to sing to make his case for re-election."

Is it over — Or, Could Edwards have a deal with the fat lady? Rep. Greg Meeks, D-N.Y., and Ed Turlington, general chairman of the Edwards campaign, join us.

• Arnold Schwarzenegger (search), making his Sunday talk show debut as governor, said that he and other foreign-born citizens should be eligible to run for the White House. Strong argument or wrong ideology?

Rep. Darrell Issa, R-Calif., and syndicated columnist Michelle Malkin join the debate.        

• We'll get an inside look at the global war on terrorism from Rowan Scarborough, author of "Rumsfeld's War: The Untold Story of America's Anti-Terrorist Commander."

All these stories and much more!

Don't miss "Hannity & Colmes" LIVE this evening at 9 p.m. ET!