President Barack Obama and Mitt Romney continued to refine their closing arguments to voters Wednesday with an eye toward the handful of swing states and key demographic groups that will decide the election next month.

Both campaigns took time out to spin perceptions about which side had the momentum down the stretch in a race that remains essentially tied.

According to the latest Washington Post-ABC News daily tracking poll, the contest remained unchanged from Tuesday, with 49 percent of likely voters nationally backing Romney and 48 percent supporting Obama.