Poll: Romney up 3 in Ohio, best showing since June By Justin Sink - 09/05/12 08:25 PM ET Mitt Romney has opened a 3-point lead in the pivotal swing state of Ohio, according to a new poll released Wednesday — the Republican nominee's best showing since June. The Republican ticket garnered support of 47 percent of those surveyed, versus 43 percent for Democrats, according to a poll released by Gravis Marketing. President Obama has led consistently in the polls since June, although that lead has been usually within the margin of error. Meanwhile, 10 percent of voters remain unsure in...