Expected wins for Clinton, Trump rivals in big Saturday balloting, but will it be enough?

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Polling and caucus sites opened Saturday morning in five states in which rivals to Hillary Clinton and Donald Trump will try to slow the Democratic and Republican front-runners' march to their respective party’s presidential nomination.

Republicans are caucusing in Kansas, Kentucky and Maine, while Democrats are caucusing in Kansas and Nebraska. Republicans and Democrats also are voting Saturday in the Louisiana primary.

Maine Democrats caucus on Sunday, while voters in both parties go to the polls in the Puerto Rico primary.

Texas GOP Sen. Ted Cruz is hoping to do well in Kansas, Kentucky and Maine caucuses, and the Louisiana primary. A good showing would help him secure his position as the No. 2 GOP candidate ahead of Florida Sen. Marco Rubio. But neither appears to have a path toward winning enough delegates or the nomination. 

"Being a conservative cannot just be about how loud you're willing to scream ... or about how many names you call people" Rubio said at CPAC, the annual gathering of conservatives, just outside of Washington."

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