YouGov's pre-election poll, conducted between October 31st and November 3rd, shows Democrat Barack Obama with a two-point lead over Mitt Romney in the national popular vote (48.5%-46.5%).
YouGov also completed 27 state-level polls during this same time period. Based on these polls, President Obama is well-positioned to win in the Electoral College Tuesday. A Romney victory is not impossible, however: if the cards line up correctly for him, the former Massachusetts Governor could squeak by the threshold of 270 electoral votes and become the next President.
YouGov also polled on 21 Senate races throughout the country. While not every competitive Senate race was polled, the results suggest that Democrats have the upper-hand in the race for control of Congress' upper chamber.