HARRISBURG, Pa. (AP) — A new independent poll shows that most Pennsylvanians do not favor shifting the state's electoral votes away from a winner-take-all system in presidential elections.The poll released Wednesday by Quinnipiac University in Connecticut also showed no clear leader in the crowded Republican field vying for the party's presidential nomination in 2012.Tim Malloy of the university's polling institute says the results show that many Republican voters are not happy with the choice of current candidates. Former Massachusetts Gov. Mitt Romney garnered 18 percent, while Texas Gov. Rick Perry received 16 percent.Voters say 52 percent to 40 percent that they prefer the winner-take-all system over a proposal by a top Republican state senator to award electoral votes by congressional district.The statewide telephone survey polled 1,370 registered voters and had a sampling error margin of plus or minus 2.7 percentage points.