For years, political stability in nuclear-armed Pakistan has been a major concern for the international community, particularly for the West. Terrorist attacks perpetrated by homegrown Islamists have wreaked havoc in the South Asian country that borders Iran, Afghanistan, China and India. A surge in extremist tendencies and a rise of anti-West Islamist parties in Pakistan is definitely not a pleasant situation for the United States and its NATO allies, whose forces have been battling the Taliban and so-called "Islamic State" (IS) in Afghanistan for many years.

Although Washington has never been shy of criticizing the Pakistani military establishment for "backing" its "jihadist proxy groups" in war-torn Afghanistan, the US so far has not been able to confront the army generals openly and directly.

Read more: German-Pakistani relations on sensitive diplomatic footing

The Pakistani military, thus, remains the most powerful player in the country's politics and calls most of the shots. Pakistan's security is directly linked to its army's policies and actions. Although the generals are seen as backing some extremists groups — an allegation they deny — a weakened Pakistani army could also trigger an uncontrollable chaos in the Islamic country as "non-state actors" could gain control of the administration.

Of course, a mature civilian political setup can thwart such dangers, but democracy has failed to deliver much to the masses. Also, the generals have ruled the country either directly or from behind the scenes, hence not allowing democracy to flourish.

The July 25 general elections in the country are being contested against the backdrop of who should have supremacy in state affairs? Civilian leaders, the military or the military-backed politicians?

Former PM's 'rebellion'

A military protégé in the 1980s and the early 1990s, three-time premier Nawaz Sharif turned against his army backers in 1999 when his majority government was overthrown by General Pervez Musharraf in a bloodless coup. Sharif was sent into exile in Saudi Arabia after giving a guarantee that he would not return for the following ten years.

But Sharif came back to Pakistan after eight years to play an active role in politics. He had already joined hands with another former PM, Benazir Bhutto, who was later assassinated in an election rally in December 2007. Sharif had also signed a "charter of democracy" with Bhutto to minimize the role of the military in state affairs.

But it was after he became prime minister in 2013 that Sharif adopted an explicit anti-military posture. He attempted to seek friendly ties with India and its prime minister, Narendra Modi, and tried to take foreign policy matters in his control. Sharif's moves irked the army, who analysts say tried to cut him to size.

Last year, Pakistan's Supreme Court disqualified Sharif from prime minister's post on Panama Papers-linked corruption charges. Earlier in July, an accountability court sentenced him to 10 years in prison and his daughter Maryam Nawaz to seven years behind the bars. Both were in the UK when the court delivered its verdict. 

Read more: Maryam Nawaz, challenging Pakistan's powerful army

This could have been the end of Sharif's political career, but he decided to return to Pakistan from the UK to face jail. As the father-daughter duo are now incarcerated in a Rawalpindi jail, his Pakistan Muslim League (Nawaz Group, PML-N) party's chances of coming back to power after the July 25 vote have increased. But political observers say the military is trying to make sure that Sharif's resurgence doesn't take place and is using the judiciary to keep him out of politics. The military's public relations department has refuted these claims many times.

"Civil-military relations deteriorated during Sharif's tenure. Sharif's arrest could fuel these tensions," Zahid Hussain, a political commentator, told DW.

Another Pakistan analyst Abdullah Dayo says: "Sharif is likely to get 'sympathy votes.' He has been successful in promoting his narrative about civilian supremacy."

The conservative anti-corruption 'messiah'

Imran Khan was Pakistan's most poplar cricketer in the 1970s and the 1980s. Under his captaincy, the country won its first one-day format cricket World Cup. In the 1990s, Khan started charity work and opened a much-needed cancer hospital in the country. He received donations from all around the country.

Read more:Who really is Imran Khan? 

Khan soon ventured into politics and launched the Tehreek-e-Insaf (PTI, Movement for Justice) party that promised to eradicate corruption from Pakistan. Essentially a reformist party, the PTI blamed Sharif's PML-N and Bhutto's Pakistan People's Party (PPP) for the country's acute economic and energy crises, unemployment and inflation.

Khan's PTI initially didn't gain much traction. During the early 2000s, Pakistan's main focus was on the US-led war on terror in Afghanistan. But after the end of Musharraf's eight-year rule in 2007 and the return of democracy, the PTI slowly made its way into Pakistani politics. In the 2013 election, Khan's party came second and formed government in the restive northwestern Khyber Pakhtunkhwa province, which borders Afghanistan.

"Khan's stance on corruption, terrorism and nepotism in Pakistani politics has struck a chord with the masses, which are fed up with the traditional ruling elite. He has no corruption charges on him, no foreign assets," claims a PTI activist in Islamabad, Khawar Sohail.

It was Khan's party who filed corruption cases against Sharif. His relentless effort to see Sharif out of power has borne fruits. Now he is dubbed "the next PM" of Pakistan. It is unclear, however, whether he can defeat Sharif's party in Punjab, Pakistan's most populous and electorally most significant province. Punjab is still Sharif's political stronghold and poll rigging in Khan's favor could trigger massive protests in the province. But it is clear that whoever wins in this province will form the next government in Islamabad.

"With alleged election rigging in favor of the PTI, it is likely that Khan's party will get more seats in parliament. The PML-N will also face a tough challenge in Punjab," analyst Dayo said.

But Xari Jalil, a Lahore-based journalist, thinks it will be a "hung parliament" with no party gaining a majority.

"In 2013, Sharif's PML-N won Punjab easily. This time we see a tough competition from the PTI. At the same time, the PTI won't be able to win as many seats in the province as it is expecting. After all, the PML-N still has support in Punjab," Jalil told DW.

Some analysts are of the view that a parliament with no clear majority for any party also suits the military establishment, as it will be easier for the generals to deal with a "weak premier."

The Pakistani army denies it favors any party and says it has no role in election beyond its constitutional limits.

Read more:How would the US deal with a 'Prime Minister Imran Khan'? 

'Voice of sanity'

Amid this Sharif-Khan tug-of-war, it is Bilawal Bhutto Zardari, son of Benazir Bhutto, who has impressed the liberal sections most. Bilawal, who became chairman of the PPP at an early age after his mother's assassination in 2007, faces a Herculean task to revive the PPP, which was once Pakistan's most potent political force. Although the PPP's chances of winning next week's vote are slim, Bilawal's political campaign has focused on dealing with issues and ideas rather than personalities.

But analysts also say that he needs to distance himself from his father, former President Asif Ali Zardari, if he wants to have a long political career. Zardari's reputation as a "king maker" in Pakistani politics comes with massive corruption accusations against him. Zardari also lacks Benazir Bhutto's charisma, which was a reason behind her immense popularity in Pakistan.

"Bilawal is intelligent but his political career has been scripted by his father and members of his team. He could revive his mother's party if he breaks free from his father's influence and takes charge of the PPP," Hasan Mujtaba, a New York-based Pakistani journalist, told DW.

Read more: Has Pakistan's Bhutto dynasty lost its political charm?

Crucial elections

The July 25 polls are not just crucial for Pakistan; they are important for the security situation in Afghanistan and South Asian geopolitics.

Apart from fixing the country's economic woes, the next government will have to deal with a number of complex regional issues. An international terror watchdog placed Pakistan on its "gray list" in June for sponsoring militant groups. The Financial Action Task Force (FATF) could put the country on its "blacklist" in September. The consequences of such a move on Pakistan would be disastrous as it would cripple its economy.

The next government will have to allay the international community's concerns about terror financing and Islamist support. But some banned Islamist groups have already been given a free hand to contest the elections and hold rallies. Mainstream political parties are also getting into local alliances with these groups to win the vote.

US President Donald Trump's administration demands more cooperation from Islamabad to bring peace to Afghanistan. So far, Islamabad and Washington have been at loggerheads over the issue. The US now reportedly seeks direct talks with the Taliban, something that would not go down well with Pakistani authorities, who want to secure their leverage on Af-Pak geopolitics.

The next government will either take a more confrontational course toward the US or will cooperate, and it depends on who forms the next government. Khan, a possible PM, has been very critical of US policies in Afghanistan and will likely take an aggressive stance.

China's multibillion-dollar initiative, the China-Pakistan Economic Corridor (CPEC), also needs a fresh start. There hasn't been much progress on the Beijing-funded project. There is resistance against CPEC from local groups in Pakistan that see it as China's design to exploit their resources. The West also has concerns about CPEC.

Read more:Pakistani minister: 'CPEC linked to civilian supremacy' 

While Khan is likely to take a more conservative approach toward geopolitical issues, Sharif is expected to deal with them from a business-oriented perspective. Pakistan is at a crossroads and the July 25 vote will determine which path the country will take.