Associated Press

(AP) - A political tip sheet for the rest of us outside the Washington Beltway, for Tuesday, April 10:

WHAT'S HAPPENING

SANTORUM DROPS OUT: Rick Santorum quit the presidential race, bowing to the inevitable after an improbably resilient run for the White House. His decision cleared the way for Mitt Romney to claim the Republican nomination. With his family standing behind him at the podium, Santorum told supporters that the battle to defeat President Barack Obama would go on, but he pointedly made no mention or endorsement of Romney, the front-running candidate whom Santorum had derided as an unworthy standard-bearer for the GOP. The former Pennsylvania senator stressed that he'd taken his presidential bid farther than anyone expected, winning 11 states and millions of votes. Santorum spoke with Romney before the announcement, a Republican source close to the campaign said, and Romney asked to meet him sometime in the future.

1964 REVISITED: How is 2012 like 1964? The choice facing voters in November is as stark as the milestone 1964 contest between Lyndon Johnson and Barry Goldwater. So says President Barack Obama. Maybe he just liked the results of the 1964 election: one of the biggest Democratic landslides in history. The president made his comments during a fundraising blitz in Florida, just before Rick Santorum pulled out of the Republican contest, virtually handing Romney the nomination. Obama used a daylong trip to Florida to call again for Congress to raise taxes on millionaires, a populist pitch on an issue that he hopes will help define the differences with nominee-to-be Romney. He also had three fundraising stops, which were expected to add at least $1.7 million to Obama's sizeable campaign fund.

IT'S ME! NO, IT'S ME! Republican presidential contenders Newt Gingrich and Ron Paul are vowing to stay in the race even though Rick Santorum is not. Each man is trying to claim he is the true conservative candidate to beat President Barack Obama in the November election. Santorum's departure Tuesday has pushed former Massachusetts Gov. Mitt Romney closer to being the Republican Party's nominee his summer. But Gingrich and Paul say there is still time left for voters to pick a more suitable alternative. Gingrich took to Twitter late Tuesday to call Santorum's departure "the last stand for conservatives" and urge supporters to donate to his campaign. Paul's campaign, meanwhile, says the Texas congressman is "the last _ and real _ conservative alternative" to Romney.

ROMNEY PICKS UP ANOTHER ENDORSEMENT: Iowa Gov. Terry Branstad has endorsed front-runner Mitt Romney's bid for the Republican presidential nomination. At a statehouse news conference, Branstad said it's become clear that Romney will be the party's nominee. The Iowa governor added that the time had come for all Republicans to unite behind the former Massachusetts governor and focus on defeating President Barack Obama.

WHAT'S TRENDING

I KNOW YOU ARE, BUT WHAT AM I?: One candidate is worth up to $250 million, ran a private equity firm and plans to build an elevator for the cars at his beach house. The other is the former head of the Harvard Law Review who became a best-selling author and millionaire and now lives in the world's most famous mansion _ 1600 Pennsylvania Ave. But don't expect Mitt Romney and President Barack Obama to embrace their elite status. In a campaign year when populism sells, they are trying to stick the rich guy label on each other, making clear that being wealthy and privileged is not necessarily a political asset with the uncertain economy. The former Massachusetts governor has faced withering criticism from Democrats who try to paint him as a ruthless financier who has paid lower tax rates unavailable to typical middle-class families. Romney, meanwhile, has pushed to paint the president as a detached liberal who doesn't fully grasp the depths of the nation's economic woes.

BY THE NUMBERS:

A Washington Post-ABC News poll on the middle class finds:

4 in 10: The number of Americans who say they belong to the middle class

50 percent would vote for Obama

46 percent would vote for Romney

Of those struggling to remain middle class:

35 percent support Obama

58 percent support Romney

51 percent cite gas prices as a serious hardship

64 percent don't see the economy in their area improving

49 percent say jobs are difficult to find

More than 75 percent disapprove of Obama's handling of the economy

53 percent say that's a major reason to oppose him in November

Of those who describe themselves as "comfortable" or "moving up" beyond it:

59 percent support Obama

39 percent support Romney

17 percent see gas prices as a serious problem

37 percent say the economy isn't improving in their area

23 percent say jobs are very difficult to find.

40 percent disapprove of Obama's handling of the economy

57 percent trust Obama to protect the middle class

WHERE THEY'LL BE WEDNESDAY:

_ Gingrich: Delaware

_ Paul: Texas

_ Romney: Connecticut, Rhode Island

_ Obama: Washington

IN THEIR WORDS:

_ "And we made a decision over the weekend that while this presidential race for us is over, for me, and we will suspend our campaign effective today, we are not done fighting." _ Rick Santorum.

_ "Rick has waged a remarkable campaign. His success is a testament to his tenacity and the power of conservative principles." _ Newt Gingrich, on Santorum dropping out.

_ "Congratulations to Sen. Santorum on running such a spirited campaign. Dr. Paul is now the last - and real - conservative alternative to Mitt Romney. We plan to continue running hard, secure delegates, and press the fight for limited, constitutional government in Tampa." _ Ron Paul campaign chairman Jesse Benton, on Santorum leaving campaign.

_ "It's no surprise that Mitt Romney finally was able to grind down his opponents under an avalanche of negative ads. But neither he nor his special interest allies will be able to buy the presidency with their negative attacks." _ Jim Messina, President Barack Obama's campaign manager, on developments in the GOP campaign.

_ "I wish they weren't called the Bush tax cuts. If they're called some other body's tax cuts, they're probably less likely to be raised." _ Former President George W. Bush on the tax cuts he enacted in 2001 and 2003 that Democrats want to see expire and Republicans want to keep in place.

(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)