Martin Kaste

From now until Nov. 6, President Obama and GOP presidential candidate Mitt Romney will emphasize their differences. But the two men's lives actually coincide in a striking number of ways. In this installment of NPR's "Parallel Lives" series, a look at Obama's time at a Hawaii institution called Punahou.

Punahou School was founded by missionaries in 1841 — the campus is just up the hill from Waikiki, and it's built around a historic spring.

Republicans are still within reach of a big political goal this year: retaking control of the Senate. They lost the majority in 2006, in part because of the razor-close victory of Democratic challenger Jon Tester in Montana.

Now, Tester is the incumbent facing a tough challenge of his own. And if he's going to win re-election, he has to turn out a lot of younger voters, the way he did in 2006. And on that front, he does have some allies.

We don't know how much software mogul Larry Ellison recently paid for the Hawaiian island of Lanai — for 98 percent of the island, to be exact — but estimates run upward of half a billion dollars. So what do you get for that kind of money?

Beautiful beaches, for starters. A view of Maui, just eight miles away. A couple of luxury resorts built by the previous owner. And, as a bonus, some delicate history.

Republican hopes of capturing the Senate in November rest on a handful of tossup races in states like Montana, Missouri and Virginia.

Surprisingly, some analysts also are putting Hawaii in the tossup column.

Hawaii is the bluest of blue states; it hasn't elected a Republican to the Senate since 1970. But with the retirement of 22-year incumbent Daniel Akaka, Republicans believe they have a chance.

And regardless of who wins, the state will have its first female senator come January.

In Hawaii, the language of politics is a little different.