Overall, 55 percent of those who are closely following the campaign say they disapprove of what the GOP candidates have been saying. By better than 2 to 1, Americans say the more they learn about Romney, the less they like him. Even among Republicans, as many offer negative as positive assessments of him on this question. Judgments about former House speaker Newt Gingrich, who denounced Romney on Saturday night in Nevada, are about 3 to 1 negative…

Obama’s overall approval rating stands at 50 percent, the highest in a Post-ABC News poll since a brief run above 50 percent immediately after Osama bin Laden was killed in early May. Still, nearly as many — 46 percent — disapprove. Among registered voters, 49 percent say Obama’s performance warrants a second term; exactly as many say it doesn’t…

In a general-election test, Obama leads Romney 52 to 43 percent among all Americans; more narrowly, 51 to 45 percent, among registered voters. Among all adults, it’s Obama’s first time topping 50 percent in a head-to-head matchup with Romney since July; it’s his first time ever above that point among registered voters.

Obama’s momentum since mid-January has evened the score with Romney among political independents. Among independent voters in the last Post-ABC poll, Romney held a 12-point edge; now these voters split 48 percent for Obama, 47 percent for Romney.