South Carolina Sen. Tim Scott is getting the attention of Republican primary voters. He gets support from just 3% of Republicans as their first choice in the GOP presidential primary, according to the latest national NBC News poll. But that's just part of the picture: The number of GOP voters who see Scott as their second-choice candidate has risen sharply — more than any other Republican candidate polled by NBC News from April to June. In June, 12% of those polled said the same, a 9-point increase over the 3% who said so in April.