Gen-Yers may be as divided as their parents when it comes to choosing the next president but on the “hot button” issues they’re surprisingly in sync.

A survey of 18- to 29-year-olds showed nearly 32%, across all political persuasions, preferred Sen. Barack Obama of Illinois. His main rival for the Democratic nomination, Sen. Hillary Clinton of New York, followed closely with 26%, according to Peanut Labs Inc., which conducted the survey via social networking sites. On the Republican side, former Arkansas Gov. Mike Huckabee came in third at just about 8%, while Rudy Giuliani, the former mayor of New York who withdrew from the race on Wednesday, came in fourth. The poll of 1,070 has a four percentage point margin of error.

While the horse race mirrors national uncertainty in choosing a presidential candidate, Gen-Y tended to be more unified when it came to controversial issues from abortion to Iraq.

Across parties, 55% agreed abortion should be kept legal, 55.1% opposed a ban on same-sex marriage and 76% strongly opposed the war in Iraq.

Though the economy tends to be the No. 1 issue on the campaign trail, domestic issues — health care, education and poverty — were most important to 30% of the younger crowd. Economic concerns were second, with 24% ranking it as most important.

Of those eligible to vote, 91% said they planned to do so; Peanut Labs noted that “would make them the deciding demographic in November.” Gen-Y tends to lean Democratic, with nearly 45% identifying themselves as Democrats; nearly 28% independent and 27% Republican.