Hypothetical matchups by the independent Quinnipiac (KWIN-uh-pe-ack) University Poll show:

President Trump at 47 percent, including 41 percent of independent voters, to Biden’s 46 percent, including 46 percent of independent voters;

Trump at 47 percent, including 41 percent of independent voters, to Sanders’ 45 percent, including 48 percent of independent voters;

Trump at 47 percent, including 41 percent of independent voters, to O’Rourke’s 46 percent, including 48 percent of independent voters.