Matteo Salvini, Italy's deputy prime minister, denied he will look to change a coalition agreement in Rome if his Lega party performs well at this weekend's EU elections.

Tensions in Italy's government appear to be growing with differences of opinion between the right-wing Lega party and left-leaning Five Star Movement (M5S) becoming more pronounced. The unlikely alliance came to power in June last year but the campaign trail for the EU Parliamentary elections has unveiled large rifts between the two.

"This vote is about Europe, to change Europe, to change banks, agriculture, borders," Salvini told CNBC's Willem Marx in Bari, Italy, on Tuesday when asked about a possible relationship breakdown with M5S.

"Nothing is going to change within the Italian government. I just hope that, after the election, our relationship with the Five Star Movement will be less confrontational. But even if I win, we won't ask for more ministers, we are not going to change anything," he added.