Answer:
Position issues
Step-by-step explanation:
Swing issues trigger change in support by the voters over time. These issues are important to political parties and they pay attention to them.
Political parties also look at Polarization issues that cause opposition between the ruling party and the party-in-opposition
Valence issues such as corruption, care of the elderly and crime are either evenly loved or disliked by the voters. If at any time a political party gets involved in corruption issues, they may become very unpopular and so they have to pay attention to those issues that could make them not liked by the people.
Parties pay less attention on issues in which the general public are divided (unlike in the case of Valence issues) and opposition candidates accept varying policy positions on them