GOP heavy hitters galore this morning to mark the start of the convention tomorrow. CBS has Marco Rubio and Haley Barbour, CNN has Scott Walker, NBC has Jeb Bush, and Fox News has the nominee himself. And for the Democrats? Antonio Villaraigosa, Debbie Downer, and that’s pretty much it. I like these odds.

Over/under on the number of minutes devoted to Romney’s Birther joke across the five major shows today: 60. The line-up via WaPo:

Fox News Sunday: Live reporting from the GOP convention and interviews with Mitt and Ann Romney from New Hampshire and the campaign trail.

NBC’s Meet the Press: Former Florida Governor Jeb Bush; Sen. John McCain (R-AZ); DNC Chair Rep. Debbie Wasserman Schultz (D-DL); Arizona Governor Jan Brewer; Mike Murphy, Republican Strategist; Chuck Todd, NBC

CBS’ Face the Nation: Sen. Marco Rubio (R-FL); Rep. Marsha Blackburn (R-TN); former Gov. Haley Barbour (R-MS); RNC Chairman Reince Priebus; Dan Balz, Washington Post; Peggy Noonan, Wall Street Journal; Norah O’Donnell, CBS; John Dickerson, CBS and Slate

ABC’s This Week: Gov. Bob McDonnell (R-VA); Los Angeles Mayor Antonio Villaraigosa; George Will, ABC; Rep. Donna Edwards (D-MD); Jennifer Granholm, Current TV; Republican strategist Mary Matalin; Greta Van Susteren, Fox News

CNN’s State of the Union with Candy Crowley: RNC Chairman Reince Priebus; Gov. Scott Walker (R-WI); Al Cardenas, American Conservative Union; Sen. Kay Bailey Hutchison (R-TX); Gov. Martin O’Malley (D-MD); Ron Brownstein, National Journal and CNN; Karen Tumulty, Washington Post