President Barack Obama is telling college students they have the most at stake in November's presidential election and says their generation will determine the nation's path.

He says Republican rival Mitt Romney doesn't have a plan to move the country forward and has written off young people as a "lost generation."

Obama spoke Tuesday at Iowa State University. It was his first stop on a two-day trip taking him to three university cities.

Obama is seeking to tap the enthusiasm that drove millions of young people to campaign and vote for him in 2008. His campaign team is working to register voters who were in high school back then.

Said Obama: "For the first time in most of your lives you will get a chance to pick a president."

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