NASHUA, N.H. — Mitt Romney extended his lead overnight and a surging Jon Huntsman now has a decent shot at a surprise second place finish in tonight’s Republican presidential primary here, according to the final Suffolk University daily tracking poll released this morning.

Whether it suggests attacks on his career at private equity firm Bain have made voters rally around him or they’re just gravitating to the front-runner, Romney is now at an even more commanding position, with 37 percent support.