WASHINGTON — Pres­i­dent Don­ald Trump and Demo­c­ra­t­ic chal­lenger Joe Biden each have a path to win the White House. The for­mer vice pres­i­dent is com­pet­i­tive in all the bat­tle­ground states Trump car­ried in 2016, and has put a hand­ful of tra­di­tion­al Repub­li­can states, includ­ing Geor­gia and Ari­zona, in play. Trump can win by defend­ing a wide swath of ter­ri­to­ry he won in 2016, but his hopes for reelec­tion are heav­i­ly depen­dent on the swing states of Flori­da and Pennsylvania.

Grab the binoc­u­lars and focus on these 10 states as elec­tion returns start rolling in:

FLORIDA: 29 ELECTORAL VOTES

All eyes are on Flori­da, a swing state known for razor-thin elec­tion tal­lies. If Pres­i­dent Don­ald Trump doesn’t win Flori­da, he’s going to have a rough time cap­tur­ing enough states to stay in office. If Demo­c­rat Joe Biden doesn’t win the state, he still has oth­er path­ways to victory.

Don’t put the state in either can­di­dates’ win col­umn too ear­ly. After the polls close, Flori­da elec­tion offi­cials are expect­ed to announced the results of mil­lions of mail-in bal­lots cast ear­ly. If more Democ­rats vot­ed in advance, it could make it look like Biden is win­ning. It’s impor­tant to keep watch­ing as bal­lots cast on Elec­tion Day trick­le in. The remain­ing votes might heav­i­ly favor Trump and allow him to eke out a win just as he did in 2016. More­over, polls close an hour lat­er in Florida’s Pan­han­dle, which is a Repub­li­can stronghold.

PENNSYLVANIA: 20 ELECTORAL VOTES

Trump won the long-run­ning Demo­c­ra­t­ic state of Penn­syl­va­nia in 2016 by a lit­tle more than 1 per­cent­age point. Biden has had a slight advan­tage in most polls, while some sug­gest Trump remains posi­tioned to cap­ture the state again.

Trump’s hopes of win­ning boost­ed after Biden, in a pres­i­den­tial debate, called for phas­ing out fos­sil fuels. That cre­at­ed an oppor­tu­ni­ty for Trump in a state with a robust nat­ur­al-gas industry.

Biden, who was born in Scran­ton, claims some favorite-son sta­tus in the state and has trav­eled there a lot dur­ing the cam­paign from his home in near­by Delaware.

Bucks Coun­ty, once Philadelphia’s most GOP-heavy sub­urb, has been trend­ing Demo­c­ra­t­ic. Trump lost that coun­ty by less than 2 per­cent­age points in 2016 and has seen his stand­ing in the sub­urbs steadi­ly erode since then.

OHIO: 18 ELECTORAL VOTES

Trump glid­ed to vic­to­ry in Ohio four years ago by 8 per­cent­age points, but recent polls show this year’s pres­i­den­tial race tight­en­ing in the Buck­eye State.

Trump’s sup­port in key sub­urbs has erod­ed and he has worked to keep a hold of the near-his­toric mar­gins he earned from vot­ers in rur­al areas of the state in 2016.

As ear­ly vot­ing began in the state, Biden expand­ed his ad buys into every cor­ner of Ohio. Biden’s push into tra­di­tion­al­ly Repub­li­can areas sig­naled his campaign’s hope that the state could be with­in his grasp.

Biden also added a last minute cam­paign stop Mon­day in Cleve­land, which his cam­paign hoped would juice turnout for him.

GEORGIA: 16 ELECTORAL VOTES

Pop­u­la­tion changes are dri­ving pol­i­tics in the Peach state.

Geor­gia, long a GOP strong­hold, hasn’t vot­ed for a Demo­c­ra­t­ic pres­i­den­tial can­di­date since the 1990s, but parts of the state are lean­ing Demo­c­ra­t­ic. Trump eas­i­ly won the state by 5 per­cent­age points in 2016, but Biden main­tains he has a shot and made cam­paign stops in Geor­gia dur­ing the final week of the campaign.

The GOP grip on Geor­gia is loos­en­ing as the num­ber of old­er, white, Repub­li­can-lean­ing vot­ers die. They are being replaced by younger peo­ple — some hav­ing moved to fast-grow­ing Atlanta from oth­er states — who vote Democratic.

MICHIGAN: 16 ELECTORAL VOTES

Michi­gan was long con­sid­ered a Demo­c­ra­t­ic strong­hold in pres­i­den­tial con­tests. But Trump won it by less than 11,000 votes in 2016 with sup­port from work­ing-class vot­ers and a boost from Hillary Clinton’s poor show­ing with Black vot­ers in Detroit.

Biden has teamed up with for­mer Pres­i­dent Barack Oba­ma to cam­paign in Flint and Detroit, pre­dom­i­nant­ly Black cities where strong turnout will be essen­tial to putting the state in Biden’s win column.

Trump isn’t ced­ing Michi­gan to Biden. In his cam­paign vis­its, Trump argued that he has pro­mot­ed trade poli­cies that have ben­e­fit­ed Michigan’s auto indus­try, while pil­lo­ry­ing the state’s Demo­c­ra­t­ic gov­er­nor over restric­tions she has imple­ment­ed to try to stem the spread of the coronavirus.

ARIZONA: 11 ELECTORAL VOTES

Ari­zona has a long polit­i­cal his­to­ry of going Repub­li­can. It’s the home state of Bar­ry Gold­wa­ter, a five-term, con­ser­v­a­tive sen­a­tor who was the Repub­li­can nom­i­nee for pres­i­dent in 1964.

Trump won Ari­zona in 2016, but it is no longer an iron­clad GOP stalwart.

A fast-grow­ing Lati­no pop­u­la­tion — polit­i­cal­ly acti­vat­ed dur­ing the past decade by anti-immi­grant leg­is­la­tion — plus explo­sive growth among sub­ur­ban­ites skep­ti­cal of Trump has ener­gized Democrats.

In 2018, Sen. Kyrsten Sine­ma became the first Demo­c­rat in three decades to win an U.S. Sen­ate seat. Democ­rats also won three statewide offices, five of nine con­gres­sion­al seats and made gains in the state leg­is­la­ture that year.

WISCONSIN: 10 ELECTORAL VOTES

Trump won Wis­con­sin by few­er than 23,000 votes in 2016. To win it again, he needs to per­form well out­side urban areas like Mil­wau­kee and Madi­son. His record on han­dling the coro­n­avirus pan­dem­ic is at the fore­front in many vot­ers’ minds as cas­es of the virus spike in Wisconsin.

Biden is expect­ed to win urban areas and recent polling sug­gests Trump is not doing as well as he did in 2016 in GOP-lean­ing sub­urbs around Milwaukee.

Those are key areas for suc­cess­ful Repub­li­can cam­paigns in the state. It’s unclear whether Trump can lure enough votes in the more rur­al areas to off­set Biden strong­holds in Mil­wau­kee, Madi­son and Green Bay.

IOWA: SIX ELECTORAL VOTES

Trump won Iowa hand­i­ly in 2016, yet the pub­lic health and eco­nom­ic crises result­ing from the coro­n­avirus pan­dem­ic are part of why Democ­rats think they have a chance.

Iowa is not a must-win for Biden. A loss for the pres­i­dent would sig­nif­i­cant­ly nar­row his path to reelection.

NEVADA: SIX ELECTORAL VOTES

Trump nar­row­ly lost Neva­da in 2016 as the state has trend­ed toward the Democ­rats in the past decade, but the pres­i­dent thinks he can flip it.

Trump’s cam­paign has invest­ed heav­i­ly in the state and is rely­ing on its ground game to turn out vot­ers. Democ­rats, by con­trast, have large­ly relied on vir­tu­al cam­paign efforts dur­ing the pan­dem­ic, save for the casi­no work­ers’ Culi­nary Union, which has sent work­ers door-to-door.

Some Democ­rats fear Trump has gained momen­tum from increas­ing sup­port from Lati­nos and non-col­lege edu­ca­tion white vot­ers, two impor­tant con­stituen­cies in the state.