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Charles Rex Arbogast, Associated Press
Republican presidential candidate Rep. Ron Paul, R-Texas, poses for a photo as he visits a caucus site Tuesday, Feb. 7, 2012, in Coon Rapids, Minn.

GOLDEN VALLEY, Minn. — Presidential hopeful Ron Paul made his final appeal for Minnesota Republican caucus votes with drop-ins at two sites where ballots will be cast Tuesday night.

The 76-year-old Texas congressman with particular appeal among younger voters has invested days of campaigning and money for television ads ahead of caucuses in Minnesota, where he hopes to eke out the first win of his presidential campaign.

In a brief appearance at Coon Rapids Middle School, Paul waded through a crowd to sign autographs, pose for photos and remind people to vote. He declined to make any predictions on the Minnesota outcome before heading to another suburban Minneapolis caucus site.

He planned a caucus-night party outside Minneapolis.

Paul's strategy has been to concentrate on caucus states where he can amass national convention delegates even if he doesn't win. He has hit on anti-war themes and cast himself as the candidate most committed to cutting government spending.

Paul finished fourth in Minnesota four years ago. Mitt Romney won the contest in 2008.