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We can now expect both parties' nomination battles to continue through the final primaries. In the GOP, the issue seems certain to remain unresolved until the national convention in Cleveland in July.

The contests taking place in five states could winnow the GOP field and determine each party's presidential nominees. More than 1,000 delegates are at stake. Here's what to watch in each state.

Although at least one more debate is scheduled for March 21, Thursday's had the feeling of a finale. The themes were mostly policy oriented, with a few tiffs over who's likeliest to win in November.

Trump's successes endanger both Cruz and Rubio. Will this be the debate where they stop fighting each other and take on Trump?