Perhaps best known for bringing the term hanging chad into the national lexicon, the Sunshine State carried George W. Bush to victory in 2000 by a razor-thin margin of 537 votes following a lengthy statewide recount. The state has been an electoral prize ever since, and although President Obama cached Floridas 29 electoral votes in 2008, recent polling has former Gov. Romney up by about 1 percent. Polls close at 8 p.m. Eastern.
Flag of Ohio
Jupiterimages/Getty Images
OHIO (18 electoral votes)
Whats round on the sides, hi in the middle, and probably the biggest battleground of all in 2012? Ohio. Obama carried the state in 2008, and holds a narrow 2 percent lead going into election day, according to polling averages. A factoid surely not lost on Gov. Romney: No Republican has ever won the White House without winning Ohio, making the states 18 electoral votes all the more precious. Polls close at 7:30 p.m. Eastern.
Virginia State Flag
Bill Manning/Getty Images/iStockphoto
VIRGINIA (13 electoral votes)
Although historically a red state, Virginiaand its 13 electoral votesflipped blue for Obama in 2008, the first time the state went to a Democratic candidate since 1964. However, the state currently has a Republican governor and is home to several large military bases, which may carry Romney over the edge. Romney holds a narrow 0.5-1 percent lead in Virginia and a double-digit lead among military families, polling data show. Polls close at 7 p.m. Eastern.
Wisconsin State Flag
Mark Herreid/Getty Images/iStockphoto
WISCONSIN (10 electoral votes)
The opposite of Virginia, Wisconsin is a typically blue state. However, the presidents once double-digit lead there has shrunk to just four points, polls show. Add that decline to the fact that Romneys running mate, Rep. Paul Ryan is a Wisconsin native, and the states 10 electoral votes may belong to the Republican ticket in 2012. Polls close at 9 p.m. Eastern.
Colorado State Flag
Katherine Welles/Getty Images/iStockphoto
COLORADO (9 electoral votes)
Although Coloradans gave their nine electoral votes to Obama in 2008, polls show the president currently leading in the state by less than 1 percent. Polls close at 9 p.m. Eastern.
Flag of the state of Iowa
Martin Bangemann/Getty Images/Hemera
IOWA (6 electoral votes)
Returns in other battleground states with earlier poll closings may render Iowas six electoral votes moot. Still, in a tight national race with less than 2 percent separating Obama and Romney in the state, both candidates have made a big play to win there. After supporting Obama in its 2008 Democratic caucuses, Iowa stayed with Obama in the general election. Polls close at 10 p.m. Eastern.
Flag of Nevada (isolated)
ayzek/Getty Images/iStockphoto
NEVADA (6 electoral votes)
The desert sun isnt the only thing making voters sweat in Nevadaits also the double-digit unemployment and high mortgage foreclosures. These two economic issues likely will be top of mind for Nevada voters when they go into the booth, with six electoral votes up for grabs. Average polls show Obama leading by just 2.4 percent in the state. Polls close at 10 p.m. Eastern.
New Hampshire Flag
Julia Freeman-Woolpert/Getty Images/iStockphoto
NEW HAMPSHIRE (4 electoral votes)
Romney and Obama have left no stone unturned, and have been grinding it out in the Granite State for its four electoral votes. Just a 1 percent margin separates the two. Polls close at 8 p.m. Eastern.